Free online PDF tools

Merge, split, compress, convert, and edit PDFs. Most tools run entirely in your browser — your files never leave your device.

Thirty-six PDF tools sit here, and they split into three technical groups worth telling apart. The first group rewrites the document structure without ever looking at the rendered page: merging, splitting, rotating, reordering, deleting pages, cropping, flattening forms, stamping watermarks and page numbers, adding a signature and repairing a damaged file are all carried out by pdf-lib, which parses the PDF object tree in the tab, edits it and serialises a new file. Text stays text, fonts stay embedded, and the page count is the only real limit. The second group renders pages with pdf.js, the same engine Firefox uses for its built-in reader, and works from the rendered result: PDF to Image exports pages as PNG or JPEG, the preview thumbnails in every tool come from the same renderer, and PDF OCR rasterises the pages you select before handing them to Tesseract so scanned documents become searchable text. Compress PDF also belongs here, and it is the one tool whose behaviour surprises people: it renders each page at the DPI its preset asks for — 48, 72, 150 or 300 — re-encodes it as JPEG at 20, 40, 65 or 85 percent quality, and rebuilds the document from those images at the original page size in points. The file gets dramatically smaller, but the text stops being selectable, so it is the right tool for a scan-heavy file you need to email and the wrong one for a contract someone has to search. The third group converts outward into other formats: PDF to Word writes a real DOCX, PDF to Excel builds a spreadsheet with SheetJS, PDF to PowerPoint produces slides, and PDF to Text, Markdown, HTML and SVG cover the lighter exports. Nothing in any of the three groups is uploaded — every byte of every document stays inside the browser tab, which also means a password-protected file you cannot open locally cannot be opened here either. Two tools need a caveat rather than a promise. PDF Password does not use the PDF specification's own encryption: it derives a key from your password with PBKDF2 and wraps the file in an AES-GCM container that PDF Unlock reverses, so protect files you will re-open on ToolChamp, not ones a colleague must open in Acrobat. PDF Unlock also opens ordinary encrypted PDFs when you supply the password. Everything is free, unwatermarked and unmetered. Four pages were added on top of that structure. Compress PDF to 500KB and Compress PDF to 1MB invert the preset problem: instead of picking a quality label and hoping, you name the byte ceiling and the page renders the document repeatedly, solving for the next DPI and JPEG quality from the overshoot it just measured, up to five passes. It stops at 40 DPI and quality 0.30, and if the file still will not fit it says it could not reach the target and hands back the smallest version rather than pretending. JPG to PDF and PNG to PDF are the two halves of Images to PDF given their own pages because the honest answer differs by format: at Maximum quality a JPEG is copied into the PDF byte for byte with no second round of compression, while a PNG is embedded losslessly with its alpha channel preserved as a soft mask.

36 tools · always free · no account needed