April 18, 2024

• Deployed a new version: RSK-M128p2 (v3/text).
  • Minor post-processing fixes.
• Deployed new version: RSK-P112 (v3/pdf*)
  • Initial support for detection of in-text placeholders to be filled in (form_field).
  • Algorithm updated with more data.

April 4, 2024

• Deployed new version RSK-M128 (v3/text)
• Improved source code and pseudo code indentation
  • source code is enclosed with triple backticks
• Support for detection of in-text placeholders to be filled in (form_field)
  • placeholder underscores, dots, and dashes are output as \( \\qquad \)
  • placeholder boxes are output as \(\square\)

March 26, 2024

• Deployed new version: RSK-P111p6i2 (v3/pdf*)
• Improved export to DOCX: added flattening of nested text tables if the nested table is just one column with several rows.

March 15, 2024

• Deployed new version: RSK-P111p5i2 (v3/pdf*)
• MMD to PDF-LaTeX conversion improvements
  • Added additional fonts to support a broader range of scripts.
  • Expanded language detection capabilities to accurately and more reliably handle texts.
  • Language detection extended to include Thai, Tamil, Hebrew, Hindi, and Bengali.
  • Automatically use XeLaTeX for documents containing non-Latin, Greek, Cyrillic (LGC) scripts, ensuring better rendering of multilingual texts.
  • Standardized font usage to the Noto family for non-LGC scripts, providing consistency and extensive script support across documents.
• MMD to LaTeX conversions and the tex.zip extension’s output may now include code requiring XeLaTeX for proper rendering of non-LGC texts. It’s notable that only Note to PDF-LaTeX allows for specific font selection. For MMD to LaTeX and the output from the tex.zip extension, conversions standardize on CMU Serif and Noto Serif for non-LGC scripts.

March 13, 2024

• Deployed a new version: RSK-M127p5i1 (v3/text).
• Fixed incorrect duplication of the “caret” in Asciimath outputs (e.g., 100(1.03)^2t=5000 instead of 100(1.03)^(^^)2t=5000).
• Deployed new version: RSK-P111p4i2 (v3/pdf*)
• Improved export to DOCX: added the ability to automatically detect the language for the entire document.

February 29, 2024

• Deployed new versions: RSK-M127p4i1 (v3/text and v3/latex) and RSK-P111p3i2 (v3/pdf*)
• General efficiency improvements.

February 26, 2024

• Deployed new version: RSK-P111p3i1 (v3/pdf*)
• Improved export to LaTeX (tex.zip): we now use double backslashes (\\) for line breaks in the Table of Contents and various sections without starting a new paragraph in text mode.

February 22, 2024

• Deployed a new version: RSK-M127p3 (v3/text).
• Fixed incorrect grouping of fractional function arguments in Asciimath outputs, fractional function arguments are now properly contained within functions by being wrapped in parentheses (e.g., sec ((5theta)/(4))=2 instead of sec (5theta)/(4)=2 and log ((x)/(y^(5))) instead of log (x)/(y^(5))).

February 16, 2024

• Deployed a new version: RSK-M127p3 (v3/text and v3/latex).
• We now validate the region parameter and return appropriate error messages.

February 6, 2024

• Deployed new version: RSK-P111p2 (v3/pdf*)
• Added new API option "include_equation_tags": boolean

It is not immediately obvious from Maxwells equations that the time-varying current is the source of radiation. A simple transformation of the Maxwells equations

\[
\begin{aligned}
\nabla \times \mathbf{E} & =-\mu \frac{\partial \mathbf{H}}{\partial t} \\
\nabla \times \mathbf{H} & =\varepsilon \frac{\partial \mathbf{E}}{\partial t}+\mathbf{J}
\end{aligned}
\]

into a single second-order equation either for \(\mathbf{E}\) or for \(\mathbf{H}\) proves this statement. By taking the curl of both sides of the first equation in (1.2) and by making use of the second equation in (1.2), we obtain

\[
\nabla \times \nabla \times \mathbf{E}+\mu \varepsilon \frac{\partial^{2} \mathbf{E}}{\partial t^{2}}=-\mu \frac{\partial \mathbf{J}}{\partial t}
\]

From (1.3), it is obvious that the time derivative of the electric current is the source for the wave-like vector \(\mathbf{E}\).

It is not immediately obvious from Maxwells equations that the time-varying current is the source of radiation. A simple transformation of the Maxwells equations

\[
\begin{align*}
\nabla \times \mathbf{E} & =-\mu \frac{\partial \mathbf{H}}{\partial t}  \tag{1.2a}\\
\nabla \times \mathbf{H} & =\varepsilon \frac{\partial \mathbf{E}}{\partial t}+\mathbf{J} \tag{1.2b}
\end{align*}
\]

into a single second-order equation either for \(\mathbf{E}\) or for \(\mathbf{H}\) proves this statement. By taking the curl of both sides of the first equation in (1.2) and by making use of the second equation in (1.2), we obtain

\[
\begin{equation*}
\nabla \times \nabla \times \mathbf{E}+\mu \varepsilon \frac{\partial^{2} \mathbf{E}}{\partial t^{2}}=-\mu \frac{\partial \mathbf{J}}{\partial t} \tag{1.3}
\end{equation*}
\]

From (1.3), it is obvious that the time derivative of the electric current is the source for the wave-like vector \(\mathbf{E}\).

1. Individual numbered equations are wrapped in \begin{equation*}...\end{equation*} to support numbering.
2. The aligned environment is now replaced with align* to support numbering
   • We also replace gathered with gather*.
   • In general, we will use the environments that support numbering when using "include_equation_tags": true.
3. These changes are also visible in lines.mmd.json format.

1. We do not generate equation references in the text (e.g. \ref{eq:1.3}). In the given example, in the last paragraph, the equation (1.3) is being referenced. While that reference is straight forward, equations (1.2a) and (1.2b) are being referenced as the first equation in (1.2) and the second equation in (1.2). This demonstrates that it takes significant semantic understanding of the document content to correctly unravel all the references, and is beyond the scope of this update.
2. We do not generate equation labels at the moment. The reasons are:
   • We do not generate \ref elements in text, and that would make \label elements redundant
   • Some widely used LaTeX rendering libraries do not support \label and \ref
     • Katex does not support it. Additional details
3. When we have a block equation for which we output an array environment, and this block has multiple equation numbers associated with it, only the last equation number is being tagged. This is because LaTeX allows only one equation number per array. The same holds for the cases environment. We do plan to add support for the numcases environment which will enable multiple tags per one block of equations.

February 3, 2024

• Deployed new ocr-version RSK-M127p2
• Fixes internal error handling

February 3, 2024

• Deployed new versions: RSK-M127p1, RSK-P111p1 (v3/pdf*)
• Improvements to tabular outputs.

February 2, 2024

• Deployed new versions: RSK-M127, RSK-P111 (v3/pdf*);
• Initial OCR support Jordan matrices, improvements for tensor indices, and handwritten content;

\( \left(\begin{array}{ccc}\boxed{\begin{array}{cc}18 & -15 \\ 89 & 22\end{array}} & & \\ & \ddots & \\ & & \boxed{\begin{array}{cc}-83 & -6 \\ 9 & 3\end{array}}\end{array}\right) \)

January 27, 2024

• Deployed new versions: RSK-M126, RSK-P110 (v3/pdf*);
• OCR algorithm improvements for future chemistry releases;

January 22, 2024

• Deployed new versions: RSK-M125, RSK-P109 (v3/pdf*);
• Accuracy improvements of content detection in hard images/pages.

January 17, 2024

• Deployed new versions: RSK-M124p2;
• Changed chemistry outputs;

January 16, 2024

• Deployed new versions: RSK-M124p1;
• Changed expand_chemistry to include_chemistry;

January 15, 2024

• Deployed new versions: RSK-M124;
• OCR improvements for small images;

January 11, 2024

• Deployed new versions: RSK-M123, RSK-P108 (v3/pdf*);
• OCR improvements of images with complex tensor indices;

\( \epsilon_\sigma^{\mu \nu \rho} \)

\( \epsilon^{\mu \nu \rho}{ }_{\sigma} \)

January 9, 2024

• Deployed new versions: RSK-M122p1;
• Fixes for internal errors in post-processing when "include_word_data": true is used in the request;

December 28, 2023

• Deployed new versions: RSK-M122, RSK-P107 (v3/pdf*);
• Information if a line is printed, handwritten, or both is added to line data outputs;

{
    "src": "https://mathpix.com/examples/printed_handwritten_0.jpg",
    "formats": ["text"],
    "include_line_data": true
}

{
    "image_width": 808,
    "image_height": 404,
    "is_printed": true,
    "is_handwritten": true,
    "auto_rotate_confidence": 0.0,
    "auto_rotate_degrees": 0,
    "confidence": 1.0,
    "confidence_rate": 1.0,
    "text": "b) Absolute-Value Function:\n\\[\nf(x)=\\frac{1}{2}|x-1|-2\n\\]",
    "languages_detected": [],
    "line_data": [
        {
            "type": "text",
            "cnt": [
                [
                    193,
                    39
                ],
                [
                    380,
                    44
                ],
                [
                    419,
                    50
                ],
                [
                    424,
                    55
                ],
                [
                    430,
                    66
                ],
                [
                    424,
                    105
                ],
                [
                    419,
                    110
                ],
                [
                    259,
                    110
                ],
                [
                    132,
                    105
                ],
                [
                    61,
                    99
                ],
                [
                    39,
                    94
                ],
                [
                    0,
                    77
                ],
                [
                    0,
                    55
                ],
                [
                    55,
                    39
                ]
            ],
            "included": true,
            "is_printed": true,
            "is_handwritten": false,
            "text": "b) Absolute-Value Function:",
            "after_hyphen": false,
            "confidence": 1.0,
            "confidence_rate": 1.0
        },
        {
            "type": "math",
            "cnt": [
                [
                    44,
                    328
                ],
                [
                    44,
                    157
                ],
                [
                    651,
                    157
                ],
                [
                    651,
                    328
                ]
            ],
            "included": true,
            "is_printed": false,
            "is_handwritten": true,
            "text": "\n\\[\nf(x)=\\frac{1}{2}|x-1|-2\n\\]",
            "after_hyphen": false,
            "confidence": 1.0,
            "confidence_rate": 1.0
        }
    ]
}

{
    "src": "https://mathpix.com/examples/printed_handwritten_1.jpg",
    "formats": ["text"],
    "include_line_data": true
}

{
    "image_width": 354,
    "image_height": 120,
    "is_printed": true,
    "is_handwritten": true,
    "auto_rotate_confidence": 0.0,
    "auto_rotate_degrees": 0,
    "confidence": 0.99951171875,
    "confidence_rate": 0.99951171875,
    "latex_styled": "\\frac{9}{12}+\\frac{2}{11}=\\frac{99}{132}+\\frac{24}{132}=\\frac{123}{132}",
    "text": "\\( \\frac{9}{12}+\\frac{2}{11}=\\frac{99}{132}+\\frac{24}{132}=\\frac{123}{132} \\)",
    "languages_detected": [],
    "line_data": [
        {
            "type": "math",
            "cnt": [
                [
                    16,
                    110
                ],
                [
                    16,
                    1
                ],
                [
                    338,
                    1
                ],
                [
                    338,
                    110
                ]
            ],
            "included": true,
            "is_printed": true,
            "is_handwritten": true,
            "text": "\\( \\frac{9}{12}+\\frac{2}{11}=\\frac{99}{132}+\\frac{24}{132}=\\frac{123}{132} \\)",
            "after_hyphen": false,
            "confidence": 0.99951171875,
            "confidence_rate": 0.9999904235654993
        }
    ]
}

December 13, 2023

• Deployed new versions: RSK-M121, RSK-P106 (v3/pdf*);
• Added support for the 12 new LaTeX commands;
• Improved recognition of text lines with many dots (e.g. text lines in table of contents images);
• Improved recognition of languages that use Cyrillic alphabets.

December 7, 2023

• Deployed new version (v3/pdf), RSK-P105;
• Another improvement for table of contents pages.

November 28, 2023

• Deployed new version (v3/pdf), RSK-P104;
• Improved processing of table of contents pages.

October 31, 2023

• Deployed new version (RSK-M120);
• Chart detection;

1. column chart
2. bar chart
3. line chart
4. pie chart
5. area chart
6. scatter chart

• Algorithm pseudo code recognition improvements.

Algorithm 1 Gradient Sign Dropout Layer (GradDrop Layer)
choose monotonic activation function \( f \quad \triangleright \) Usually just \( f(p)=p \)
choose input layer of activations \( A \quad \triangleright \) Usually the last shared layer
choose leak parameters \( \left\{\ell_{1}, \ldots, \ell_{n}\right\} \in[0,1] \quad \triangleright \) For pure GradDrop set all to 0
choose final loss functions \( L_{1}, \ldots, L_{n} \)
function \( \operatorname{BACKWARD}\left(A, L_{1}, \ldots, L_{n}\right) \quad \triangleright \) returns total gradient after GradDrop layer
for \( i \) in \( \{1, \ldots, n\} \) do
calculate \( G_{i}=\operatorname{sgn}(A) \circ \nabla_{A} L_{i} \quad \triangleright \operatorname{sgn}(\mathrm{A}) \) inspired by Equation 3
if \( G_{i} \) is batch separated then
\( G_{i} \leftarrow \sum_{\text {batchdim }} G_{i} \)
calculate \( \mathcal{P}=\frac{1}{2}\left(1+\frac{\sum_{i} G_{i}}{\sum_{i}\left|G_{i}\right|}\right) \quad \triangleright \mathcal{P} \) has the same shape as \( G_{1} \)
sample \( U \), a tensor with the same shape as \( \mathcal{P} \) and \( U[i, j, \ldots] \sim \operatorname{Uniform}(0,1) \)
for \( i \) in \( \{1, \ldots, n\} \) do
calculate \( \mathcal{M}_{i}=\mathcal{I}[f(\mathcal{P})>U] \circ \mathcal{I}\left[G_{i}>0\right]+\mathcal{I}[f(\mathcal{P})<U] \circ \mathcal{I}\left[G_{i}<0\right] \)
set newgrad \( =\sum_{i}\left(\ell_{i}+\left(1-\ell_{i}\right) * \mathcal{M}_{i}\right) \circ \nabla_{A} L_{i} \)
return newgrad

October 30, 2023

• Deployed new version, RSK-P103p6 (v3/pdf*);
• Added support for remove_section_numbering and preserve_section_numbering. Default behavior is changed to preserve_section_numbering: True.

October 27, 2023

• Deployed new versions: RSK-M119p7, RSK-P103p5 (v3/pdf*);
• Post-processing improvements: we now return result instead of Internal error for some classes of challenging inputs.

October 21, 2023

• Deployed new version, RSK-P103p3 (v3/pdf*);
• Fixed new line inconsistencies that occurred when content from different pages is joined;
• Single new line is generated before \footnotetext instead of two new lines;
• Two new lines introduce a new paragraph, and that behavior was breaking rendering experience in some cases.

October 19, 2023

• Deployed new version, RSK-M119p6;
• False paragraph detection fixed for images with list items that start with Cyrillic letters.

October 18, 2023

• Deployed new version, RSK-M119p5;
• This update is focused towards more accurate separation of text into paragraphs.

October 14, 2023

• Deployed new versions: RSK-M119p4, RSK-P103p2 (v3/pdf*);
• Fixed whitespace between Chinese symbols which used to be generated when the adjacent text lines are joined.

October 13, 2023

• Deployed new version (v3/pdf*), RSK-P103p1;
• Improved ordering of answers to multiple choice questions in some cases. For this part of PDF page:

10. Demostrar que si \(a, b \in \mathbb{R}\), entonces:
a) \(|-a|=|a|\).
e) \(|a-b| \leq|a|+|b|\)
b) \(\sqrt{a^{2}}=|a|\).
f) \(||a|-| b|| \leq|a-b|\).
c) \(|a-b|=|b-a|\).
g) \(a \neq 0,\left|\frac{1}{a}\right|=\frac{1}{|a|}\).
d) \(\left|a^{2}\right|=|a|^{2}\).
h) \(b \neq 0,\left|\frac{a}{b}\right|=\frac{|a|}{|b|}\).

10. Demostrar que si \(a, b \in \mathbb{R}\), entonces:
a) \(|-a|=|a|\).
b) \(\sqrt{a^{2}}=|a|\).
c) \(|a-b|=|b-a|\).
d) \(\left|a^{2}\right|=|a|^{2}\).
e) \(|a-b| \leq|a|+|b|\)
f) \(||a|-| b|| \leq|a-b|\).
g) \(a \neq 0,\left|\frac{1}{a}\right|=\frac{1}{|a|}\).
h) \(b \neq 0,\left|\frac{a}{b}\right|=\frac{|a|}{|b|}\).

October 12, 2023

• Deployed new version, RSK-M119p3;
• Accuracy improvements of Korean and handwritten Chinese;
• Fixes several issues with braces recognition.

October 9, 2023

• Deployed new version (v3/pdf*), RSK-P103;
• more reliable recognition of footnote text;
• initial support for table of contents;
• pseudo code algorithms are now searchable;
  • individual lines from pseudo code algorithms will be a part of lines.json output.

September 5, 2023

• Deployed new version (v3/pdf*), RSK-P101;
• Added basic support for text in the footnote section of the page. Instead of breaking the main flow, especially in multi-column documents, the text will be wrapped inside \footnotetext{ ... }.

May 25, 2023

• Deployed new version, RSK-115;
• Improved quality of printed and handwritten Chinese recognition.

April 12, 2023

• Deployed new version, RSK-113;
• This update is focused on chemistry recognition.

<smiles>Cn1c(=O)c2c(ncn2C)n(C)c1=O</smiles>

• support for stereochemistry:
  • for example, the image

• support for Markush structures:
  • for example, the image

• basic support for superatoms:
  • more superatoms will be supported in future;
• significant recognition accuracy improvement for both handwritten and printed chemistry diagrams.

February 22, 2023

• Deployed new version, RSK-111;
• Added support for the new table recognition algorithm;
• Minor general changes needed to properly support the algorithm.

• Our standard algorithm failed to recognize a table;
• "enable_tables_fallback": true is specified as a request argument.

• extremely large tables (e.g. tables with hundreds of cells);
• tables with very complex structures (e.g. tables with many \multirow and \multicolumn cells);
• tables featuring table cells with complex content like:
  • table cells with complex math like large matrices or several aligned equations;
  • tables cells containing whole paragraphs of text;
• tables containing text in languages that are more challenging to recognize properly compared to English:
  • this includes languages with rich alphabets like Chinese, Japanese, Hindi, Hebrew, Arabic, and others;
• tables containing cells with rotated text;
• tables containing diagrams inside cells like:
  • table cells with chemistry diagrams (note that these can be converted to SMILES);
  • table cells with natural images or similar:
    • table will still be recognized and contain the image link for the diagram inside its cells.

• tables with cells containing complex math like large matrices or several aligned equations;
• tables containing diagrams inside cells;
• empty grids of cells without textual content;
• tables with rotated text are partially supported:
  • in v3/pdf cells containing rotated text will be embedded as images.

• Column alignment is always central;
• All cells have all borders (top, bottom, right, and left).

February 1, 2023

• Deployed new version, RSK-110;
• Added support for new LaTeX commands: \measuredangle, \grave, \bumpeq, and \amalg;
• Improved recognition of constructs expressed with \lceil, \rceil, \lfloor, and \rfloor in combination with \left and \right;
• Improved formatting of equations in text mode (see bellow for details);
• Improved recognition of equations that contain large sub-equations in subscripts;
• Improved recognition of handwritten French;
• Improved recognition of handwritten German;
• Improved recognition of handwritten Chinese;
• Improved recognition of handwritten Japanese;
• General improvements (new data iteration).

\( y=mx+b \)\n\( x=y^{2}-1 \)

\( \begin{array}{l} y = mx + b \\ x=y^{2}-1 \end{array} \)

{:[y=mx+b],[x=y^(2)-1]:}

\( \left\{\begin{array}{l}2 x+8 y=21 \\ 6 x-4 y=14\end{array}\right. \)

{[2x+8y=21],[6x-4y=14]:}

{:[2x+8y=21],[6x-4y=14]:}

{[2x+8y=21],[6x-4y=14]:}

{:[2x+8y=21],[6x-4y=14]:}

January 30, 2023

• Deployed new version, RSK-109;
• Improved recognition of isolated symbols.

January 12, 2023

• Deployed new version, RSK-108;
• Improved handling of images that contain mixed math and text in Russian.

December 2, 2022

• Deployed new version, RSK-107p2;
• Changes in spacing of arrays, aligned arrays and similar, & and \\ now always have spaces around them (even with rm_spaces in the request);
• Visually unpleasant blocks of equations are being converted to left alignment instead of keeping the wrong alignment.

November 25, 2022

• Deployed new version, RSK-107;
• Improvements related to worksheet crops, small images with strong or dashed border near the content.

November 22, 2022

• Deployed new version, RSK-106;
• Improvements related to formatting of references in PDF pages, especially pages with green/red link boxes.

November 15, 2022

• Deployed new version, RSK-105;
• General improvements to handling zoomed out and zoomed in images. No changes to output formatting or error characteristics.

November 14, 2022

• Deployed new version RSK-104p1;
• Formating of block math is fixed in certain cases where the equations were wrongly kept in the text mode.

November 11, 2022

• Deployed new version RSK-104;
• Incremental improvement of image parsing module. Includes fixes for images with many lines of text. Accuracy improvements on handwritten data. No changes to output formatting.

November 3, 2022

• Deployed new version RSK-103p1;
• Fixed string post processing issues.

# -> \# 

October 21, 2022

• New enable_spell_check option to the v3/text and v3/pdfs endpoints greatly improves handwriting OCR for English (other languages coming soon).

June 6, 2022

• Resolved a critical bug that impacted PDF processing of two-column PDFs;
• You can now request that only certain subsets of pages are processed in a PDF, via the new page_ranges field;
• Pushed latency improvements that benefit all endpoints, reducing processing time by 30% on average;
• You can now query hour by hour API usage using the following endpoint.

April 27, 2022

• Updated how line data is represented for PDFs from using rectangular regions to polygonal contours (this is helpful for handwritten PDFs where text lines are generally not rectangular);
• Added page dimensions to the line-by-line data structures;
• There are two available data structures for line-by-line data:
  • Raw PDF lines data: this is the ideal data structure for searching; does not contain contextual annotations for titles, abstracts, etc;
  • Context enhanced PDF mmd lines data: you can use this to re-create the full document, including contextual annotations for titles, abstracts, etc. (see here for syntax);
• Published a Github repo which contains client-side code for live drawing with the Mathpix digital ink API containing a fully working example of leveraging user actions like scribbling and strikethrough to delete content.

April 18, 2022

• Added an EU server region (AWS region eu-central-1) to decrease latencies for European customer and also for adherance to GDPR:
  • Use our EU specific URL https://eu-central-1.api.mathpix.com/ to guarantee processing in Europe;
• You can now use app-tokens for authenticating requests inside client side app code;
• The new app-tokens route provides a include_strokes_session_id flag, which when true, returns a strokes_session_id string that can be used inside calls to v3/strokes, enabling digital ink sessions with live updates:
  • Pricing for the strokes endpoint when using session_ids can be found here;
• Add OCR support for basic handwritten PDFs.

March 28, 2022

• You can now get detailed line-by-line data for PDFs, including geometric coordinates, via the new GET v3/pdf/<pdf_id>.lines.json endpoint;
• Better robustness for our v3/text endpoint:
  • Our ability to correctly interpret complex layouts involving math and text has improved, with much-improved edge case handling and handling of line text for skewed images and other image distortions that occur frequently in consumer photo search applications.

March 14, 2022

• Our new OCR models feature stringent guarantees of syntactic correctness, resolving a rare but long-standing problem of occasionally malformed LaTeX strings, resulting in rendering errors due to double subscripts, double superscripts, malformed tables, and other syntax issues. This has been fixed at a fundamental level. Syntax issues are essentially completely fixed;
• Deprecated \atop command in favor of \substack.

February 8, 2022

November 15, 2021

• Deployed incremental update to our re OCR engine, resulting in:
  • significantly improved handwriting recognition, including disambiguating symbols based on context;
  • improved table parsing accuracy;
  • notably fewer errors.

September 2, 2021

• Deployed a core algorithm update for our image parsing module, resulting in significantly better accuracy and edge case behavior for all endpoints;
• Updated CLI with additional conversion types;
• Significant improvements to chemical diagram OCR;
• Support for asynchronous image processing.

July 27, 2021

• Added support for Tamil, Telugu, Gujarati, and Bengali;
• Updated our OCR to use a more effective representation of Chinese characters, leading to higher accuracy, and better coverage;
• Added support for \bigcirc.

July 19, 2021

• Support for sending image binaries for lower image upload latencies;
• Support for tags which allow you to associate an attribute with your requests and subsequently retrieve the associated requests by using tags in a /v3/ocr-results query;
• PDF processing updates:
  • Fixed a bug where pages were getting skipped;
  • Improved processing of PDFs with foreign languages;
  • Added support for configurable math delimiters.

April 12, 2021

• Servers in Singapore for faster latencies for API customers in Asia;
• Triangle diagram OCR now supported for diagrams commonly found in trigonometry textbooks;
• Added InChI option for chemical diagram OCR.

April 2, 2021

• Added a include_word_data parameter to the v3/text endpoint, which when set to true, returns word by word information, with separate results, confidences values, and contour coordinates for each word;
• Beta printed chemical diagram OCR to return SMILES format.

March 10, 2021

• New v3/pdf API endpoint (beta);
• PDF conversion CLI tool;
• Fixed miscellaneous bugs in v3/text processing for messy images;
• Incremental improvements to handwriting recognition and printed table recognition for all endpoints;
• Added support for the following printed characters:

\nvdash
\nvDash
\bigvee
\bigwedge
\fallingdotseq
\risingdotseq
\mho
\unlhd
\unrhd
\overleftrightarrow
\bigodot

February 7, 2021

• Support for triangle geometry diagram detection.

January 5, 2021

• Improved math handwriting recognition;
• Improved printed Romanian, Polish, Serbian, Ukrainian recogntion;
• Added support for the following LaTeX characters:

\varsigma
\llcorner
\lrcorner
\uplus
\biguplus
\triangleright
\triangleleft
\dddot
\circledast
\rtimes
\ltimes
\supseteqq
\oiiint
\supsetneqq
\rightsquigarrow
\Vdash
\models

December 1, 2020

• Added autorotation for v3/latex and v3/batch (see https://docs.mathpix.com/#request-parameters-3 and https://docs.mathpix.com/#result-object-3);
• Significant accuracy improvements to text / math localization performance for v3/latex and v3/batch for both ocr=["math"] (default) as well as ocr=["math", "text"], resulting in lower error rates and fewer bad results.

November 12, 2020

• Added autorotation for v3/text.

November 9, 2020

• v3/text general improvements;

• Chemistry diagram detection;

• Added ability to create and disable new API keys to accounts.mathpix.com OCR dashboard;
• Added ability to invite users (to have access to API keys, usage statistics, image results dashboard) to accounts.mathpix.com OCR dashboard.

October 14, 2020

• Added support for the following characters:

«
»
\gtrless
\lessgtr
\nsucceq
\npreceq
\llbracket
\rrbracket
\curvearrowright
\curvearrowleft
№

• Improved accuracy on:
  • Handwriting (math and text);
  • Hindi language recognition (printed);
  • Tables and matrices;
• We now support backgroundless PNGs with alpha channels.

August 14, 2020

• Added include_line_data parameter, documented in https://docs.mathpix.com/#linedata-object;
• Example can be found at https://mathpix.com/docs/ocr/examples#line-data.

August 1, 2020

• Added alphabet filtering (https://docs.mathpix.com/#alphabetsallowed-object).

July 13, 2020

• Replace \dots with either \ldot or \cdot;
• Predict empty braces when appropriate, like in Chemistry images (e.g. {}^);
• Fix v3/text bug where very wide lines of text were getting skipped;
• Improved accuracy on handwritten math;
• Improved accuracy on table predictions;
• Improved accuracy on photo images of printed Hindi and Chinese text;
• Add support for \mid predictions inside set notation;
• Add support for the following languages: Czech, Turkish, Danish.

July 9, 2020

• Added new endpoint to retrieve OCR results: https://docs.mathpix.com/#get-ocr-results-v3-ocr-results.

July 1, 2020

• Skip diagrams in v3/text which caused garbage results.