Convert, unlock, compress, merge, split and manage PDFs — all from your browser. Every tool on this hub runs 100% client-side using pdf-lib and pdfjs-dist, so your files never leave your device. No account, no watermarks, no usage limits.
Turn a PDF back into an editable Word document so you can rewrite a section instead of retyping the whole file.
Lock your .doc or .docx layout into a PDF so the recipient sees the exact fonts, spacing and page breaks you wrote.
Stitch several PDFs into one file — cover letter + CV, or scanned pages that arrived one at a time.
Pull out the pages you actually need from a long PDF — one chapter, a single invoice, or every page as its own file.
Shrink a PDF that's too big to email or upload — usually by compressing the embedded images, not the text.
Turn each PDF page into an image you can drop into a slide, a social post, or a website — without screenshotting page by page.
Turn a stack of phone photos or scans into one PDF — the format receipts, forms and portals actually accept.
Fix a PDF that opens sideways or upside-down — usually a scanner that grabbed the page the wrong way round.
Strip the password prompt off a PDF you already own — so you can copy text, print, or edit without typing it every time.
Add a password to a PDF before you email it — so if it forwards or leaks, the file itself is still locked.
Add text watermarks to PDF files
Extract specific pages from a PDF
Add page numbers to PDF documents
Edit PDF title, author, and subject
Yes, all PDF tools on ToolStackTools are 100% free. There are no usage limits, no watermarks, and no registration required.
Absolutely. All PDF processing happens in your browser. Your files are never uploaded to any server.
Yes, our Merge PDF tool supports combining multiple PDF files into one document.
Since processing happens in your browser, the limit depends on your device's memory. Most files up to 100MB work without issues.