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EVOA Toolbox

Compress PDF

Try to make a PDF smaller: lossless optimization, or rebuild it from compressed page images. Results vary by file.

Processed locally in your browser. Your files are not uploaded.

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What this tool does

Compress PDF offers two honest approaches to shrinking a file. Optimize keeps every page exactly as it is (text stays selectable) and only re-saves the file in a more compact structure, optionally removing metadata. Rasterize renders each page to an image at the resolution and JPEG quality you choose and builds a new PDF from those images, which can shrink scanned or image-heavy documents a lot but turns text into pictures.

How much you save depends entirely on the file. A PDF that already contains well-compressed images and tidy structure may not shrink at all, while a PDF made of large page scans often does. The tool shows the original size, the new size and the change, and if the result is not smaller it says so and lets you download the original instead of a bigger file.

Everything runs in your browser: pdf.js renders pages locally and the new PDF is assembled in a background worker. No file is uploaded.

How to use it

  1. 1Add the PDF you want to shrink.
  2. 2Choose Optimize to keep text and quality, or Rasterize for the strongest reduction on scans and image-heavy files.
  3. 3For Rasterize pick a resolution and quality. Lower values give smaller files and softer pages.
  4. 4Press Compress PDF and watch the progress bar; you can cancel at any time.
  5. 5Compare the sizes. Download the compressed file, or the original if no reduction was possible.

Supported formats

Input: one PDF (.pdf), password-free. Output: one PDF.

Privacy

This tool runs in your browser. The data you provide is processed on your device and is not sent to our servers.

Limitations

  • No reduction is guaranteed. Files that are already compact can come out the same size or larger; in that case the tool tells you.
  • Optimize mode is lossless but usually saves little. It does not recompress the images inside the file.
  • Rasterize mode converts every page into an image: text becomes non-selectable and non-searchable, links and form fields stop working, and fine detail may soften.
  • Deep clean (Optimize) rebuilds the file from its pages and therefore drops bookmarks and form fields.
  • Rendering hundreds of pages needs time and memory; very large pages are rendered at a capped pixel size.

FAQ

How much smaller will my PDF get?

It depends on the file and cannot be promised. Scans and photo-heavy PDFs can shrink noticeably in Rasterize mode; already optimized PDFs may not shrink at all.

Which mode should I use?

Try Optimize first because it changes nothing visible. If the file stays large and you do not need selectable text, try Rasterize with a moderate quality.

Why is the result bigger than the original?

Re-encoding can add overhead. When this happens the tool says so and offers the original file for download.

Can I get the text back after rasterizing?

No. Rasterized pages are pictures. Keep your original if you need searchable text.

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