Alternatives
Products that do what How far can you push file conversion into the browser? does
Hi HN, I’ve been experimenting with how much file conversion can realistically be pushed into the browser. Last year I tried compiling LibreOffice headless to WASM. The smallest build I could get was ~150MB — far too large just to convert a DOCX to PDF. That’s when I shifted to a hybrid approach. Today ~90% of conversions run client-side using WASM (FFmpeg, PDF/image tooling, spreadsheets, etc.). The heavier edge cases fall back to a small server pipeline (LibreOffice, Pandoc, Poppler). The main challenges weren’t the libraries themselves, but: browser memory ceilings handling large…
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Most file converter sites upload your files to their servers. File Converter Free runs everything client-side using WebAssembly — your files never leave your device. 215+ formats across conversion and compression, 75+ browser-based tools for PDF, dev utilities, text, calculators and network diagnostics — all available in 9 languages. Built this solo. What tools do you wish ran client-side but currently don't? https://file-converter-free.com/en/tools
Mar 2026
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Convert .webm files to .mp4 files without uploading them
2021
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2017 · apify.com
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just wanted to share this useful tool with you. I have been looking at something like this for a very long time. https://chrome.google.com/webstore/detail/css-used/cdopjfddj... what it does: it analyses your html dom and looks for css classes. Then it extracts it all and combines it into 1 single css file. I used 5 css framworks which was on 340kb kb. This tool made it 36kb!
2018
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Free & Safe online file converter. No ads. No bs.
7d ago · convert.softorino.com
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Hi HN, I've just launched DocFlex, an offline macOS app that converts Markdown documents into over 30 formats like PDF, HTML, EPUB, LaTeX, and more. Why I built it: As someone who frequently works with Markdown, I found it cumbersome to convert documents into different formats, especially when dealing with multiple files. Online converters weren't ideal due to privacy concerns and the need for an internet connection. So, I created DocFlex to make the process seamless and entirely offline. Key Features: 100% Offline: All conversions happen locally on your machine. Your documents are never…
2024 · docflex.app
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Hello HN! It kept surprising me how much of a hassle it is to generate a PDF with decent HTML5 rendering from my SaaS apps. I tried several free libs and APIs but ended up with botched rendering a lot of times. So I set out to simplify this chore by creating an AWS hosted HTML to PDF conversion API that's based on Chrome. This API will allow a dev to just send the HTML to our API and get a PDF in response without having to worry about running and managing Chrome somewhere in their infra. I just finished the first version of my landing page and hosted pdf generation API…
2018
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Hey HN I built MarkdownConverters.com — a tool that converts any file format (PDF, DOCX, PPTX, HTML, or URL) into clean, structured Markdown. I often needed to prep documents, reports, or scraped pages for AI pipelines, documentation, or version control, but existing tools either broke formatting, lost code blocks, or produced unreadable Markdown. So I built something that focuses on: • Accurate structure (headings, lists, tables, code, links) • Consistent Markdown output ready for LLMs or docs • Fast, browser-based conversion with privacy-friendly processing • Support for multi-format and…
Oct 2025 · markdownconverters.com
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Free online converter with no file size or usage limits
19d ago · fastmediaconvert.com
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2013 · pdfeverything.com
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Free browser-based file tools — nothing uploaded to a server
19d ago · websitegeek.net
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90+ browser tools. No upload. Files never leave your device.
4d ago · ihaveatoolforthat.com
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Convert, resize, optimize images privately in your browser
29d ago · freewww.com
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Convert or Combine into 1 File - Upload to Google Docs
16d ago · mephitic.gumroad.com
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