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  3. Reduce image size in KB

Reduce image size in KB

Type the KB limit a form asks for, add the photo, and download a file that fits. Works with JPG, PNG, WebP and iPhone HEIC. Nothing is uploaded.

Drop images here

or click to choose from your phone or computer

JPG · PNG · WebP · HEIC · GIF · BMP · AVIF — several at once
0 images · 0 KB

    Reduce image size to any KB limit

    Forms rarely say “make it smaller”; they say “maximum 50 KB” or “between 20 KB and 100 KB”. This tool takes that number directly. Type it, add the photo, and get a file that fits, with the final size displayed. It handles JPG, PNG, WebP, HEIC from iPhones, GIF, BMP and AVIF, several at once, entirely in your browser.

    Pick the limit the form gives you

    20 KB
    Signature uploads on exam and job portals, profile photos on application forms, thumbnails for very slow connections.
    50 KB
    Passport-style photos on application portals, ID photos for exam admit cards, avatars and forum images.
    100 KB
    Document photos for online applications, email signatures, product photos for marketplaces with strict limits, images in WhatsApp catalogues.
    200 KB
    Scanned certificates and mark sheets, visa and passport portal uploads, web page images, classified-ad listings.
    500 KB
    Photos for blogs and online shops, multi-page document scans, images in presentations, community and social uploads.
    1 MB
    Email attachments, CMS and web uploads, listing photos, sharing full-resolution phone photos without the 5–8 MB weight.

    How the size is reduced

    1. Quality first. JPEG quality is lowered from the camera’s 90+ towards 75, then further. Up to about 75 the change is invisible at normal viewing size.
    2. Resolution second. If quality alone cannot reach the number, the pixel dimensions are reduced in small steps. A document stays readable down to about 1,000 px on the long side; a portrait photo down to 300 px.
    3. Check and stop. After each step the real file size is measured. The tool stops at the first result under your limit, so you get the best quality that fits – not the smallest possible file.

    KB and MB, quickly

    You seeIn KBTypical content
    20 KB20Signature scan, tiny avatar
    50 KB50Passport-style photo at 400 px
    100 KB100One readable document page
    200 KB200Detailed scan or 1,200 px photo
    500 KB500Good-quality 1,800 px photo
    1 MB1,024Near full-quality phone photo
    5 MB5,120Straight out of a phone camera

    If you need the picture to be a specific width and height as well, the image resizer and the passport photo maker do both at once. To shrink a PDF instead, use Compress PDF.

    Frequently asked questions

    How do I reduce image size in KB?

    Add the image, type the size in KB that the form allows (for example 50), and press Compress. The tool finds the highest quality that fits under that number and shows you the result size before download.

    What is the difference between KB and MB?

    1 MB is 1,024 KB. A phone photo is usually 3–8 MB, i.e. 3,000–8,000 KB, which is why portals asking for 100 KB reject it. Type the limit in KB; for 1 MB enter 1024.

    Will the image still be clear?

    For documents, text stays readable down to roughly 100 KB per page. For portrait photos, 20–50 KB is enough at the small dimensions portals use. The tool lowers quality before resolution, so clarity is kept as long as possible.

    Does it change the pixel size?

    Only if the quality setting alone cannot reach the target, or if you choose a “Longest side” limit. To set exact pixel dimensions use the image resizer.

    Is anything uploaded?

    No. Everything runs in your browser. Close the tab and nothing remains.