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12 Free Browser-Based PDF Tools for Developers, No Upload or Sign-Up Needed

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A developer who runs DonePDF, a free site offering over 90 PDF utilities, has highlighted a dozen tools suited to developer workflows. Most of these tools run entirely in the browser, so files never leave the user's machine and no account is required. The featured tools cover conversions between PDF and formats such as Markdown, JSON, HTML, and Base64, plus diffing, validation, analysis, sanitizing, and repair. The browser tools rely on open-source libraries including pdf.js, pdf-lib, Fabric.js, and Tesseract.js, while a few heavier tasks still run on the server and are labeled as such. The author invited readers to suggest further PDF tasks they handle manually or by script.

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