Scaling Accessible Mathematics on arXiv: HTML Conversion and MathML 4
Pith reviewed 2026-05-20 17:49 UTC · model grok-4.3
The pith
Converting LaTeX mathematics papers to HTML is advancing with MathML 4 annotations to improve accessibility and speech output.
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
The paper's core claim is that the HTML conversion service for TeX and LaTeX submissions has matured through community input and technical upgrades, incorporating early MathML 4 features for accessible speech while targeting a ninety percent error-free rate and benefiting from a Rust reimplementation of the underlying converter.
What carries the argument
MathML 4 Intent annotations that encode semantic information in mathematical expressions to guide accessible speech generation.
If this is right
- Resolving user reports leads to higher fidelity in HTML renderings of complex formulas.
- MathML 4 annotations enable more natural speech output from mathematical content.
- The Rust port reduces the computational resources needed for conversions.
- Faster previews become possible during the submission process.
- Reaching the ninety percent target supports providing HTML for nearly all new papers.
Where Pith is reading between the lines
- Similar annotation techniques could apply to other scientific document formats beyond mathematics.
- Integration with emerging AI methods might further automate error detection in conversions.
- Tracking adoption rates of the HTML versions would test the practical impact of these changes.
- Lower costs could eventually extend the service to converting historical papers as well.
Load-bearing premise
That the sample of user reports and current conversion statistics captures the main difficulties in the full set of submitted documents without major overlooked problems.
What would settle it
A survey of a random sample of papers revealing persistent conversion failures in over ten percent of cases even after the described improvements would disprove the goal of ninety percent error-free HTML.
read the original abstract
We report on the ongoing development of arXiv's HTML Papers offering, available on every new TeX/LaTeX submission since its initial release in 2023. The main highlights from 2025 and early 2026 are: (i) community-driven improvements to HTML fidelity and service health, with roughly half of 6,000 user reports resolved; (ii) corpus-scale conversion work aimed at 90% error-free HTML (currently 75%); (iii) initial MathML 4 Intent annotations for accessible speech output; (iv) an in-progress Rust port of LaTeXML, reducing compute costs and enabling faster previews on submission. The arXiv HTML Papers project remains experimental, but is gradually maturing as we better understand the needs of arXiv's readers and the technical opportunities presented by new standards and by advances in programming languages and AI.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The manuscript is a status report on the arXiv HTML Papers project, available for new TeX/LaTeX submissions since 2023. It summarizes key developments from 2025 and early 2026: community-driven improvements to HTML fidelity and service health resolving roughly half of 6,000 user reports; corpus-scale conversion work targeting 90% error-free HTML (currently at 75%); initial MathML 4 Intent annotations for accessible speech output; and an in-progress Rust port of LaTeXML to reduce compute costs and enable faster previews. The project is described as experimental but gradually maturing.
Significance. If the reported metrics and developments hold, this work advances accessibility for mathematical content on arXiv by improving HTML rendering and incorporating MathML 4 for better support of assistive technologies such as speech output. The integration of community feedback with modernization of conversion pipelines could serve as a practical model for large-scale scholarly repositories handling complex technical documents.
major comments (1)
- [Abstract] Abstract, highlight (ii): The claim of progressing from 75% to a target of 90% error-free HTML is presented without any definition of 'error-free', details on the sampling or measurement methodology, or error analysis. This is load-bearing for assessing whether the corpus-scale conversion effort is on track, as noted in the abstract's quantitative highlights.
minor comments (3)
- [Highlights (i)] Highlights (i): Clarify the categories of issues covered by the 6,000 user reports and the criteria used to determine that roughly half have been resolved.
- The manuscript would benefit from a brief discussion of remaining technical challenges or limitations in the LaTeX corpus that could affect scaling to 90% error-free conversions.
- Add references to prior work on LaTeXML, MathML standards, or previous arXiv accessibility efforts to better contextualize the reported advances.
Simulated Author's Rebuttal
We thank the referee for their review of our status report on the arXiv HTML Papers project. We address the major comment below.
read point-by-point responses
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Referee: [Abstract] Abstract, highlight (ii): The claim of progressing from 75% to a target of 90% error-free HTML is presented without any definition of 'error-free', details on the sampling or measurement methodology, or error analysis. This is load-bearing for assessing whether the corpus-scale conversion effort is on track, as noted in the abstract's quantitative highlights.
Authors: We agree that the abstract would be strengthened by additional context on these metrics. The current version presents the figures at a high level without defining 'error-free' or outlining the evaluation approach. In the revised manuscript we will expand highlight (ii) to state that 'error-free' denotes conversions passing our automated validation suite for rendering and accessibility integrity, note that the 75% rate derives from a stratified sample of recent submissions, and direct readers to the error analysis section in the body of the paper. This change will make the quantitative claim more transparent while preserving the abstract's brevity. revision: yes
Circularity Check
No significant circularity
full rationale
This paper is a factual status report summarizing engineering progress on arXiv's HTML conversion pipeline, user report resolutions, conversion metrics, MathML annotations, and a Rust port of LaTeXML. It contains no derivations, equations, fitted parameters, quantitative predictions, or load-bearing self-citations. All figures are presented as direct project observations and milestones rather than results derived from the paper's own inputs or prior claims by the same authors.
Axiom & Free-Parameter Ledger
axioms (1)
- domain assumption LaTeXML can be extended and ported to support MathML 4 and improved fidelity at scale
Lean theorems connected to this paper
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IndisputableMonolith/Foundation/RealityFromDistinction.leanreality_from_one_distinction unclear?
unclearRelation between the paper passage and the cited Recognition theorem.
We report on the ongoing development of arXiv’s HTML Papers offering... community-driven improvements to HTML fidelity... corpus-scale conversion work aimed at 90% error-free HTML... initial MathML 4 Intent annotations... Rust port of LaTeXML
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IndisputableMonolith/Cost/FunctionalEquation.leanwashburn_uniqueness_aczel unclear?
unclearRelation between the paper passage and the cited Recognition theorem.
MathML 4 Intent annotations for accessible speech output
What do these tags mean?
- matches
- The paper's claim is directly supported by a theorem in the formal canon.
- supports
- The theorem supports part of the paper's argument, but the paper may add assumptions or extra steps.
- extends
- The paper goes beyond the formal theorem; the theorem is a base layer rather than the whole result.
- uses
- The paper appears to rely on the theorem as machinery.
- contradicts
- The paper's claim conflicts with a theorem or certificate in the canon.
- unclear
- Pith found a possible connection, but the passage is too broad, indirect, or ambiguous to say the theorem truly supports the claim.
Reference graph
Works this paper leans on
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Igalia brings MathML back to Chromium.https://www.igalia.com/2023/01/10/ Igalia-Brings-MathML-Back-to-Chromium.html(2023), accessed April 17, 2026
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arXiv is becoming an independent nonprofit.https://blog.arxiv.org/2026/04/ 02/arxiv-is-becoming-an-independent-nonprofit/ (2026), accessed April 17, 2026
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arxiv.org/help/submit_latex_best_practices.html, accessed April 17, 2026
arXiv: LaTeX markup best practices for successful HTML papers.https://info. arxiv.org/help/submit_latex_best_practices.html, accessed April 17, 2026
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National Institute of Standards and Technology
Miller, B.R., et al.: LaTeXML [software]. National Institute of Standards and Technology. https://math.nist.gov/~BMiller/LaTeXML/, accessed April 17, 2026
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[9]
MathML and other XML Technologies for Accessible PDF from LATEX
Mittelbach, F., Fischer, U., Carlisle, D., Wright, J.: MathML and other XML Technologies for Accessible PDF from LaTeX. In: Proceedings of the 2025 ACM Symposium on Document Engineering (DocEng ’25). pp. 1–4 (2025).https://doi. org/10.1145/3704268.3748669
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Accessibility for the Working Mathematician
Ross, J.: Accessibility for the working mathematician. arXiv:2505.22667 (2025). https://doi.org/10.48550/arXiv.2505.22667
work page internal anchor Pith review Pith/arXiv arXiv doi:10.48550/arxiv.2505.22667 2025
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W3C candidate recommendation, W3C (2025),https://www.w3.org/TR/mathml-core/
W3C Math Working Group: MathML Core. W3C candidate recommendation, W3C (2025),https://www.w3.org/TR/mathml-core/
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W3C Math Working Group: Mathematical Markup Language (MathML) Version 4.0: Mixing intent with mathml. W3C candidate recommendation draft, W3C (2026),https://www.w3.org/TR/mathml4/#mixing_intent
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discussion (0)
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