Compress PDF
Reduce file size while optimizing for maximal PDF quality.
How it works
Select PDF
Choose files from your computer or drag them into the upload box.
Choose Compression
Select between Extreme, Recommended, or Less compression based on your needs.
Download
Once processed, your optimized file is ready for download. Pure efficiency.
About This Tool
JustConvert's PDF compressor reduces your PDF file size without sacrificing readability. Whether you need to email a document, upload it to a portal with file-size limits, or simply free up storage, this tool delivers meaningful compression in seconds.
Three compression levels give you full control: Extreme achieves the smallest possible file size (ideal for archiving), Recommended balances quality and size reduction for everyday sharing, and Less Compression keeps the visual quality nearly identical while still trimming unnecessary metadata and redundant data.
- check_circleThree compression levels: Extreme, Recommended, Less
- check_circleRemoves hidden metadata and redundant object streams
- check_circleText and vector graphics remain crisp and searchable
- check_circleHandles PDFs up to 50 MB — all pages compressed at once
- check_circleNo watermark added to output file
- check_circle100% browser-based — nothing installed on your computer
Frequently Asked Questions
How much can I reduce PDF file size? expand_more
Results vary by content. PDFs with large embedded images typically see 40–70% size reduction on the Extreme setting. Documents that are already well-optimised or contain mostly vector graphics may reduce by 5–15%.
Will compression make my PDF look blurry? expand_more
On the Recommended and Less Compression settings, visually there is no noticeable difference. Extreme compression reduces image resolution, which may affect PDFs with high-resolution photos.
Is there a file size limit for PDF compression? expand_more
Yes, the maximum file size per upload is 50 MB. If your file exceeds this, try splitting it first using our Split PDF tool and then compressing each part.
Does compressing a PDF remove passwords or encryption? expand_more
No. Password-protected PDFs cannot be compressed directly. Use the Unlock PDF tool to remove the password first, compress the file, and then re-protect it if needed.
Is the compressed PDF searchable and copy-paste friendly? expand_more
Yes. JustConvert compresses image streams within the PDF but does not alter the text layer. All text remains selectable and searchable after compression.