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Repair a PDF that won't open, shows an error, or displays corrupted content -- free, in your browser, no software install.

Compare two versions of a PDF and see exactly what text or content changed between them -- free, in your browser.

Redact sensitive text or images from a PDF so they're permanently removed, not just visually covered -- free, in your browser.

Sign a PDF by drawing, typing, or uploading a signature -- free, in your browser, no printer or scanner needed.

Add a password to a PDF before emailing or sharing it -- free, in your browser, with no account or software required.

Unlock a password-protected PDF you have the legal right to access -- free, in your browser, when you already know the password.

Fill in a PDF form's fields and flatten it into a final, non-editable document -- free, in your browser, no printing required.

Trim excess margins or white space from a PDF's pages -- free, in your browser, page by page or across the whole document.

Add clean, correctly formatted page numbers to any PDF -- free, with control over position, style, and starting number.

Take a watermark off a PDF you have the right to edit -- free, in your browser, no software to install.

Stamp a text watermark or logo across every page of a PDF -- free, in your browser, with control over position and opacity.

Turn a scanned, image-only PDF into searchable, selectable, editable text -- free, in your browser, using OCR.

Save any webpage as a clean PDF -- free, no browser extension, no sign-up. Works for articles, receipts, and reference pages.

Turn a PDF into clean Markdown text you can drop into Notion, Obsidian, GitHub, or any plain-text notes app -- free, in your browser.

Turn any PDF page into a high-quality JPG or PNG image -- free, in your browser, no software or account needed.

Combine JPGs, PNGs, or phone photos into one PDF document -- free, in any order, with no watermark and nothing uploaded.

Stop losing columns off the edge of the page when you convert Excel to PDF -- a free tool and a few page-setup habits that fix it for good.

Convert a Word document to PDF (or back) without broken fonts, shifted tables, or missing images -- free, no software install required.

Drag pages into the right order, delete the ones you don't need, and fix sideways scans -- free, in your browser, no software to install.

Split a PDF into separate files or specific page ranges in seconds, free and entirely in your browser -- no upload, no account, no page limit.

No file limit, no watermark, no account, no upload -- here's what actually sets Merge apart.

Stop renaming scan001.pdf one at a time -- rename up to 100 PDFs automatically based on what's actually inside them.

Draw your letters once, then type — no font installation needed.

Learn how to fix PDF accessibility problems -- missing tags, no reading order, no alt text -- so screen readers can actually use it. Free browser tool, no upload.

Spot hidden edits, mismatched metadata, and signs a PDF was altered after signing -- free browser tool, no upload, results in seconds.

Check air quality, wildfire smoke, and pollen for your exact location in plain language before you head out -- free, installable, no account needed.

PDF-to-DXF conversions often duplicate every line from overlapping vector paths. Here's why it happens and how to clean it up free, right in your browser.

A plain look at what pdfunli.com is, who runs it, how it makes money, and what actually happens to your files when you use its free PDF tools.