Free Online PDF Compressor
Compress PDF to Target File Size
Reduce your PDF (marksheets, certificates, forms) to fit exam portal upload limits like 100KB, 200KB or 500KB. 100% private - your file never leaves your browser.
Note: compression works by re-rendering each page as an image, so this works best for scanned or image-heavy PDFs. Selectable text will become part of the image and won't be copyable in the output file.
Frequently Asked Questions (PDF Compressor)
Everything you need to know about compressing PDFs for exam forms
How do I compress a PDF to under 200 KB for an exam application?
Upload your PDF, select or type the target size (e.g. 200 KB) using the presets or the slider, then click "Compress PDF". The tool renders each page and re-compresses it until the file fits within your target, and gives you a download link.
Is my PDF uploaded to a server?
No. All compression happens locally in your browser using the PDF rendering and PDF creation libraries loaded on this page. Your file is never sent to our servers.
Will the compressed PDF still have selectable text?
No. This tool works by converting each page into a compressed image and rebuilding the PDF from those images, which is the most reliable way to hit an exact file size limit. This is ideal for exam portals that only need the document to look correct and be under a size limit, such as scanned certificates or filled forms.
Why couldn't the tool reach my exact target size?
Very small targets (e.g. under 50 KB) on multi-page or image-heavy PDFs may not be achievable without unreadable quality loss. The tool will return the smallest reasonable-quality result it could produce and label it accordingly.