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Compress PDF to 100KB

Reduce a PDF to under 100 KB for exam, job and government application portals.

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Max 100 MB per file · PDF

    Target size

    Result: under 100 KB

    Pages are saved as compressed images, so text in the result cannot be selected.

    Your file is ready!

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    Free No watermark No sign-up Files never uploaded
    Will not fit under 100 KB?Split long PDFs into parts.
    Readable?Zoom in and check every page before uploading.
    Long PDF will not fit?Split it into parts.

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    How to use Compress PDF to 100KB

    1. Select your PDFs.Choose the certificate, mark sheet or ID proof for the portal.
    2. Tick black & white if needed.Black & white lets more pages fit under 100 KB.
    3. Click Compress PDF to 100KB.The best quality that fits under 100 KB is found for you.
    4. Check the size and the text.It should be under 100 KB and still readable.

    About Compress PDF to 100KB

    Some online application forms only accept PDF documents up to 100 KB — for example certificates, mark sheets or ID proofs. This tool searches for the best quality that still fits under 100 KB, so you do not have to guess settings.

    100 KB is a small limit. It works well for one to three scanned pages; a long document may not fit while staying readable, and the tool then tells you the smallest readable size instead of giving you a blurred file.

    When is it useful? When a portal says “PDF size must be less than 100 KB” and your scan is 500 KB or 2 MB.

    Good to know: tick “Black & white” for text documents — it saves space so more pages fit under 100 KB. Pages become pictures, so text cannot be selected.

    Tips for Better Results

    • Tick “Black & white” for text documents to fit more pages under 100 KB.
    • Split long PDFs into parts if they cannot fit while staying readable.
    • Open the result and zoom in to check every page before uploading.

    Frequently Asked Questions

    Will the file be exactly 100 KB?
    It will be under 100 KB, as close to it as the quality steps allow.
    My PDF has 15 pages. Will it work?
    Often not while staying readable. Split the PDF, or use Compress PDF to 200KB or 500KB if the portal allows it.
    Which KB is used?
    1 KB = 1,024 bytes, the way Windows and most portals count file sizes.
    What happens if it cannot fit?
    You get a message with the smallest readable size instead of a blurred file.
    Works with: Government and exam portals · email · most PDF viewers

    What converts well, and what doesn't

    SettingResult
    TargetUnder 100 KB
    “Black & white” tickedMore pages fit under 100 KB
    PagesBecome pictures
    Selectable textNot kept
    500 KB or 2 MB scansShrunk for the portal
    💡 Tip: Tick “Black & white” for text documents to fit more pages under 100 KB.

    Common uses

    Government portals“Less than 100 KB” rules.
    Exam formsUpload documents.
    ID proofsSmall scans.
    CertificatesMeet limits.
    Job portalsUpload proofs.
    Bank KYCSmall files.

    Is my file safe?

    Browser processing: your files are processed on your own device and are never uploaded to our server.

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    Guide

    Compress PDF to 100KB: a complete guide

    Where the 100 KB limit comes from

    Many government, exam, scholarship and recruitment portals in India limit each uploaded document to 100 KB — caste and income certificates, mark sheets, ID proofs, experience letters. A phone scan of just one page is often 500 KB to 2 MB, so it gets rejected.

    What happens when you compress

    The tool rebuilds each page as a compressed picture and searches step by step for the highest quality that still fits under 100 KB (1 KB = 1,024 bytes, the way Windows and most portals count). The final size is shown before you download and is always below 100 KB. If the PDF is already under 100 KB, it is returned unchanged.

    How many pages fit in 100 KB

    One to three scanned pages usually stay clearly readable. With more pages, each page gets less space and text becomes soft. If the document cannot fit while staying readable, the tool tells you the smallest readable size instead of giving you a blurred, useless file.

    Common problems and how to fix them

    The tool says it cannot fit: tick “Black & white”, which saves a lot of space for text documents; remove unneeded pages; or split the PDF and upload the parts if the portal allows several files. Stamps or signatures became faint: try again without black & white. The portal says the file is still too big: some portals count 1 KB as 1,000 bytes — aim a little lower by removing a page.

    Good habits

    Crop away borders before compressing, keep the original high-quality scan safe, and open the compressed PDF on your phone to check that every word is readable before uploading.

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