Does compressing a PDF upload my file?
No. PDF parsing, page rendering, compression, and export all run locally in your browser. Files are never uploaded.
Compress PDF files online, adjust quality and resolution, and download a smaller PDF for email, uploads, or archiving
Note: this tool renders PDF pages as images before compressing. Text will not be selectable.
Higher values look sharper and produce larger files. 0.65–0.75 works well.
Lower resolution reduces file size. 100% is the original size.
The compressed PDF contains images only
Rendering takes a few seconds depending on pages and settings. Do not refresh the page.
Compare the original and compressed size, then download when ready.
Original
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Compressed
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Saved
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Pages
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No. PDF parsing, page rendering, compression, and export all run locally in your browser. Files are never uploaded.
No. Each page is rendered as an image and repacked, so text, links, and vector content become images and cannot be copied or searched.
Start with quality around 65%–75% and keep resolution at 100%. If the file is still too large, lower quality or resolution. Raise quality for sharper text, at the cost of a larger file.
Not always. Text-only or already optimized PDFs can become larger after conversion to images. Scanned or image-heavy PDFs usually compress well. Check the actual size in the result.
Scanned PDFs work normally. Encrypted PDFs with an open password or permission restrictions may fail to parse. Remove the password first and try again.
Lower the resolution or quality and try again. Close other memory-heavy tabs, or split the PDF before compressing. Very large files may exhaust browser memory.