Changelog
What shipped, newest first. The developer API keeps its own changelog, with a feed, at api.reflowpdf.com/docs/changelog; the editor’s Help menu shows the version of the editor and the engine in use.
2026
Engine
ReflowPDF 1.0.8
Long documents are split into pages faster: the HTML Standard, 1,560 pages, prints in 37 seconds. On the eleven other documents of the benchmarks a print takes 1 to 44 per cent less time and 6 to 22 per cent less memory than in 1.0.7. A PDF names the release that made it. The benchmarks are measured again on this release: it passes 19,351 of the 20,939 web-platform tests the three engines print.
Site
Benchmarks: three engines printing the same tests
ReflowPDF 1.0.7, Chrome’s print and Prince 17 print the same 20,939 web-platform tests to PDF, each judged against its own reference by one rule. It replaces the comparison of 4 November, in which Prince’s run could not load the files a test addresses from the site’s root, the test font among them, and ReflowPDF was judged on screen, not in print.
Editor
Tagged PDF on by default again
Every PDF the editor downloads is tagged as PDF/UA-1 unless Tagged PDF is turned off in Page settings: headings, tables with their header cells, alternative text, the language and the title. From 17 September a download had no tags unless a switch was turned on.
Site
Benchmarks against Prince 17
The engine and Prince 17 on the web-platform tests both were judged on, with the engine’s PDFs to check.
Editor
Council Agenda template, and a page for government
A template with data for a council or board agenda, in a new Government section of the templates with data, and a page on accessible PDF for public bodies.
API
Developer API v1
HTML, a web page or a template to PDF, with PDF/UA-1 and PDF/UA-2, PDF/A-3a and PDF/A-1b, PDF/X-4 and PDF/X-1a; pages as pictures; merging, splitting and compressing PDFs; jobs with signed webhooks; prints pinned to an engine version; SDKs for JavaScript and Python, and the engine in WebAssembly.
Editor
Ask AI uses AI pages; Free gets 10 a month
An Ask AI change uses AI pages, as importing and translating do, and a question it asks back uses none. Free goes from 3 AI pages a month to 10.
Assistants
Connectors for AI assistants
Claude, ChatGPT, Claude Code, Cursor and VS Code connect to ReflowPDF over MCP: the assistant makes the PDF, and you change it in the editor by its link.
Editor
Every page downloads without an account
Without an account, a download has every page of the document, each with a small mark in its corner.
Editor
The editor opens without an account
Anyone can open the editor, edit and download: without an account, the first three pages of a download, up to ten pages a day, each with a small mark. An account keeps documents online.
Editor
The Library, the Outline and the Properties panel
Documents and pictures kept online, with earlier versions; the document’s blocks as a tree; and the selected block’s settings in sections.
Editor
Ask AI beside the block
Ctrl J opens a small window next to the selected block: describe a change, see it on the page, and apply it or not.
Editor
The Code view
The document as HTML and CSS beside its pages, and templates filled from data, switched with Ctrl `.
Editor
PDF/UA-2
Claim PDF/UA-2 in Page settings, on Pro and Max, and more of the engine’s accessibility checks in the editor’s Accessibility panel.
Engine
Every PDF made by the Rust engine
The engine rewritten in Rust makes every PDF on the site, with no PHP left to fall back on.
Editor
Editor
Downloads without the mark counted in pages
A plan’s allowance of downloads without the mark is counted in pages, not in files.
Editor
PDF/A-3a, alternative text and paid plans
Export as PDF/A-3a on Pro and Max; alternative text for pictures, the document’s language and title in the PDF; and the paid plans.
Editor
The editor
The first version of the editor in the browser: a PDF imported with AI or a template, edited with its text flowing across pages, and downloaded.
Engine
Flex containers across pages
A flex container that crosses a page break: splitting it changes the space its items share, which moves the break, so the container is laid out again in the space left on the page. (In the first engine, in PHP.)
Engine
Tables across pages
Column and row spans, and the header row repeated on each page a table continues on. (First engine.)
2025
Engine
Text that copies out of the PDF
Fonts subset with their composite glyphs and a ToUnicode map, so text copied from the PDF is the text that was written. (First engine.)
Engine
Flexbox
CSS Flexible Box Layout: sizing on the main axis, alignment on the cross axis, growing and shrinking, wrapping onto lines; tested against web-platform tests. (First engine.) Today’s figures are on the conformance page.
Engine
The first PDF from HTML
The first valid PDF: coloured rectangles, text in Helvetica, a correct cross-reference table. (First engine.)
Engine
Input checked before layout
Sanitised input, addresses checked against requests to the server’s own network, fonts checked by their first bytes, limits on images that expand without end, and on resources. (First engine.)