Free PDF Compressor Online

    Reduce PDF file size in seconds — no signup, no watermark.

    Select PDF files

    or drag and drop — multiple files, up to 100 MB each

    • 100% Free
    • No Signup
    • No Watermark
    • Files stay on your device
    Compression level
    Target size (optional)

    How to Compress a PDF Online

    1. Upload one or more PDF files by clicking “Select PDF files” or by dragging them into the upload area.
    2. Choose a compression level — Low, Recommended or Maximum — or set a target size such as 200 KB or 1 MB.
    3. Click Compress PDF. Your files are processed right in your browser, and you can follow each step on the progress bar.
    4. Download the compressed PDF, or download every file at once as a ZIP.

    Why Use Our PDF Compressor?

    • 100% free, with no daily limits or hidden fees.
    • No signup or account needed — just open the page and start.
    • No watermark is ever added to your documents.
    • Three compression levels, so you decide the balance between quality and size.
    • A Target size option that keeps trying stronger settings until your file fits a size limit.
    • Works in modern browsers on desktop, tablet and mobile, and your files stay on your device.

    Compress PDF to a Specific Size

    Compress PDF to 100 KB

    Many government portals and exam registration sites only accept very small uploads. Pick 100 KB as the Target size; image-heavy files may need Maximum compression to get there.

    Compress PDF to 200 KB

    Job application forms and university portals often cap CVs and certificates at 200 KB. Set the target to 200 KB and the tool tries progressively stronger settings for you.

    Compress PDF to 500 KB

    Visa and embassy forms frequently ask for scanned documents under 500 KB. This target usually keeps scans clear and readable.

    Compress PDF to 1 MB

    A 1 MB file is easy to attach to email, share in chat apps and upload to most online forms.

    Compress PDF to 2 MB

    Use 2 MB when a portal allows larger uploads and you want to keep photos and scans as sharp as possible.

    Tips to Reduce PDF Size Without Losing Quality

    • Start with Recommended — it keeps text sharp and selectable while shrinking images.
    • Scanned documents shrink the most; scan at 150–200 DPI in the first place if you can.
    • Remove pages you do not need before compressing, using a page-removal or split tool.
    • Use Maximum compression only when you must hit a strict limit, because it turns pages into images.
    • If a file barely changes, it is probably already optimized — mostly text with few images.

    Which Compression Level Should I Choose?

    LevelQualitySize reductionBest for
    Low compressionBest — images barely changeSmallPrinting and documents with detailed photos
    RecommendedVery good — text stays selectableMedium to largeEmail, sharing and most uploads
    Maximum compressionLower — pages may become imagesLargestStrict size limits like 100–200 KB

    Frequently Asked Questions

    Is this PDF compressor really free?

    Yes. The PDF compressor is completely free, with no signup, no subscription and no watermark on your files.

    Is it safe to compress my PDF online?

    Yes. Compression runs entirely in your web browser on your own device. Your PDFs are never uploaded to our servers, and nothing is stored after you close the page.

    Will compressing reduce the quality of my PDF?

    Low and Recommended only recompress embedded images and keep text as sharp, selectable text. Maximum compression can turn pages into images to reach the smallest size, which lowers quality and makes text unselectable.

    Why didn’t my PDF get much smaller?

    Some PDFs are already well optimized — for example, text-only files or files with images that are already compressed. We never give you a file larger than the original: if we cannot make it smaller, you get your original file back unchanged.

    How can I compress a PDF to under 1 MB, 200 KB or 100 KB?

    Choose the size in the Target size option before you click Compress. The tool tries stronger settings until the file fits, then tells you honestly whether the target was reached. For very small targets, select Maximum compression.

    Is there a file size limit?

    Each file can be up to 100 MB. Because everything runs in your browser, very large files depend on your device’s memory and speed.

    Can I compress multiple PDFs at once?

    Yes. Add several PDFs at once, compress them in one go, and download each file separately or all together as a ZIP.