Strip metadata and rebuild the PDF with compressed object streams to reduce file size.
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Reduce PDF file size by stripping editor metadata and re-saving the document with compressed object streams. The conversion is lossless — text and vector graphics stay sharp — so savings depend on how the original was authored. Image-heavy PDFs (scans, photo books) benefit most when you also recompress the images.
Drag files into the drop zone or click to browse — you can queue multiple files for batch compression.
Move the quality slider to balance visual fidelity against final file size — the preview updates instantly.
The tool re-encodes the files locally using WebAssembly — no server upload, no wait queue.
Save each compressed file individually or download them all in a single ZIP archive.
Large files slow down uploads, blow through mobile data caps, and hurt page-speed scores. PDF Compressor shrinks them without visible loss of quality by picking modern codecs and sensible defaults. Because compression happens locally, you can safely process confidential documents, private photos, or unreleased assets — nothing ever touches a server. Toolzer's design philosophy is simple: privacy-first (no tracking, no accounts), performance-first (the page is interactive in under a second on a 3G connection), and honesty-first (no fake ratings, no dark patterns, no upsells). PDF Compressor follows the same rules as every other utility on the site. You can bookmark this page, share the URL with a colleague, or pin it to your browser's toolbar — the experience will be identical every visit, and it will keep working even if you're on airplane Wi-Fi. Real people use this tool for real work — freelancers cleaning up client deliverables, sysadmins triaging tickets, students finishing assignments — and it is tuned for those workflows, not for demo videos.
How Toolzer compares to typical online alternatives.
| Feature | Toolzer | Typical competitors |
|---|---|---|
| Price | 100% free | Free with limits or paid |
| Signup required | No | Usually yes |
| Data privacy | Processed in your browser | Uploaded to their server |
| Watermark | Never | Often on free tier |
| File size limit | Generous / none | Usually 5–10 MB |
| Ads | Minimal | Heavy, intrusive |
| Mobile friendly | Yes | Often not |
No. This is a structural rebuild — pages, fonts and images render identically. Only hidden metadata and bloated streams are removed.
Some PDFs are already optimised, especially exports from modern tools like LaTeX or InDesign. There's no room left to shrink without re-encoding images.
No. The PDF is processed entirely in your browser tab.
No. Every utility on Toolzer is free, anonymous, and works in any modern browser without registration.
Yes. Whenever the tool can produce an answer entirely in the browser, the data never leaves your device.
Yes. The interface is fully responsive and works on iOS Safari, Android Chrome, and every modern mobile browser.
Yes. Every Toolzer page has a clean permanent URL you can bookmark or share.
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The Extract Images from PDF is a fast, single-purpose tool that focuses on doing one job well.
Shrink a PDF toward a 100KB target by rebuilding streams and downscaling page images.