Free PDF Tool · Compress

Compress PDF with High Quality

High-quality JPEG re-rendering compresses your PDF in the browser. Not fully lossless: each page is rasterized, which removes text selectability and may slightly soften edges. For perfectly lossless compression you need server-side or desktop tools.

Honesty about "without losing quality".
What this tool does: compresses your PDF by re-rendering each page as a high-quality JPEG (default 88% quality) and rebuilding the PDF. The result is a smaller file that looks visually similar at normal viewing zoom.
What "lossless" actually requires: structural-only optimisation (object stream consolidation, font subsetting, removing unused metadata, recompressing existing images at their current encoder). That kind of compression is not feasible browser-side because most PDFs lack the inspection metadata needed without rebuilding. Desktop tools like Ghostscript, qpdf, or Adobe Acrobat Pro can do true lossless optimisation; a server-side service like ILovePDF or SmallPDF can too.
Tradeoff: after this tool runs, the output PDF's text is no longer selectable or searchable, and copy-paste from the PDF won't work. If you need to keep text selectable, use a desktop/object-level compressor such as Acrobat Pro, qpdf/Ghostscript workflows, or another text-preserving tool.
↑

Drop your file here

or click to browse from your device

Accepts: .PDF
How it works: Compression re-renders each page as a JPEG and rebuilds the PDF. Image-heavy PDFs may shrink a lot, while text-only or already-optimized PDFs may shrink very little. The output is image-based — text selection and searchability are removed. For text-preserving compression, use a desktop tool like Acrobat Pro.

About this Compress PDF with High Quality

Reduce the size of your PDF files quickly with our high-quality PDF compressor. We re-render each page as a JPEG at the selected or iterated quality setting and rebuild the PDF, typically cutting file size by a widely varying amount depending on the content.

This compressor works fully in your browser. You can pick a target file size (e.g. 200 KB or 1 MB) and the tool will iteratively adjust quality to get close to the target where possible; some PDFs cannot reach very small targets without heavy quality loss, and final size may be slightly over or under — useful for email attachments, web uploads, and government portal submissions that enforce strict size limits.

Your privacy is the default. Your selected files are processed in your browser and are not uploaded to our server; all processing happens client-side using browser PDF libraries such as pdf-lib and PDF.js, plus browser canvas rendering. Closing the tab clears the working session from this page; downloaded files remain on your device.

This tool is free to use with no signup required. Large files may be limited by your browser’s memory and device performance. Part of PDF Tools Base, a privacy-first collection of 161 PDF utilities. Bookmark the page for next time, and explore related tools in the footer below.

How to use the Compress PDF with High Quality tool

  1. Drop your PDF file.
  2. Optionally set a target size or quality level.
  3. Click Process and wait for compression.
  4. Download the compressed PDF.

Why use PDF Tools Base?

100% Browser-Based

Compress PDF with High Quality processes selected files in your browser. Your selected files are processed in your browser and are not uploaded to our server.

No Server Upload, No Signup

Your selected files are processed locally in your browser. No account, no server upload, no email needed.

No Watermark Ever

Outputs are clean. We never stamp our brand or a paywall watermark on your files.

Free to Use

No accounts and no signup. Use the tool as much as you need within reasonable browser limits.

Works on Every Device

Windows, Mac, Linux, iPhone, iPad, Android, Chromebook. Any modern browser.

Built on Open Source

Powered by browser-side PDF libraries such as pdf-lib and PDF.js, plus browser canvas rendering.

Common uses for compress pdf with high quality

Readable scans

Keeps text and lines crisp at high JPEG quality.

Shareable reports

Smaller file that is still clear on screen.

Fidelity first

Best when visual quality matters more than tiny size.

On-screen review

Good legibility for previews and proofs.

Modest savings

Uses ~88% quality, so some PDFs shrink only a little.

Note on text

Output pages become images, so text isn't selectable.

Frequently asked questions

Is the Compress PDF tool safe to use?

Yes. Everything happens in your browser. Your selected files are processed in your browser and are not uploaded to our server. Closing the tab clears the working session from this page; downloaded outputs remain on your device until you delete them.

Do I need to register or sign in?

No. No account, no email, no sign-up. Open the page and start using the tool immediately. Free to use, no signup needed.

Is there a watermark on the output?

No. PDF Tools Base never adds a watermark or branding to your output. Your final file is clean — just what you produced from the original.

Is there a file size limit?

There is no fixed limit. Compression renders pages in your browser, so RAM, page count, DPI/quality settings, and PDF complexity affect what is feasible. Phones may struggle with large PDFs; try splitting first, lowering DPI/quality, or using a desktop browser.

Does this work on mobile devices?

Yes. The tool works on all modern mobile browsers: Chrome on Android, Safari on iOS, Firefox, Edge, Brave. The drag-and-drop also accepts files from your phone’s file manager.

How much smaller can the compressor make my PDF?

Image-heavy PDFs may shrink a lot, while text-only or already-optimized PDFs may shrink very little. The final size depends on page count, images, target size, and quality settings.

Will text still be searchable after high-quality compression?

No. Compression rerenders each page as a JPEG, so the text becomes part of an image. If text searchability matters, use a lossless compressor (desktop) or keep the source PDF.