Initializing Secure Environment…
Initializing Secure Environment…
100KB is the standard limit for single documents on many exam, scholarship and government portals: a caste or income certificate, an ID proof, an admit card, a one-page form. This page opens the compressor already aimed at 100KB, so there is no level to guess. It stops at the first setting that fits, which keeps the most detail the limit allows, and it never uploads your document.
To compress a PDF to 100KB, use a compressor with a target-size setting rather than a fixed level. On ihatepdf this page opens already set to under 100KB: add your PDF and press Compress. It tries up to six progressively stronger settings and keeps the first result under 100KB, shows the exact size, and works in your browser without uploading the file.
Exam-registration systems, scholarship portals and government application forms often cap each upload at 100KB so that millions of applications fit in their storage. A phone scan of a single page is usually 1–3MB, so it gets rejected until it is compressed. The limit is printed next to the upload field; aim a little under it, because some portals count a kilobyte as 1,000 bytes rather than 1,024.
Do three things before compressing. Crop the empty margins so the compressor is not spending its budget on white paper. Scan in grayscale if colour is not required, or convert an existing scan with the Grayscale mode in Invert PDF. Delete blank pages. Then run this page. It keeps the first setting that fits, so the better you prepare the file, the higher the quality you keep.
Text in a PDF is stored as characters and outlines, not pixels, so compression does not blur it. The tool re-encodes embedded images, removes duplicate data, and subsets fonts. It then re-opens the result and compares the page count and the extracted text with the original. If anything changed, it returns your original file instead of a damaged one.
Open this page, add the file and press Compress. It is already set to 100KB, so it keeps trying stronger settings until the file fits, then shows you the exact size. If it reports "smallest possible", the document has more image data than 100KB can hold; remove pages or crop margins and run it again.
A phone or office scan stores each page as a photograph, often at 300 DPI in colour, which is 1–5MB per page. Text PDFs exported from Word are usually already under 100KB. The compressor targets exactly that image data and leaves the text alone.
For one or two pages, yes. The ladder starts at 150 DPI, which is sharp on screen, and only goes lower if the file still does not fit. Zoom the preview on the stamp and signature before downloading.
Five scanned pages in 100KB is about 20KB a page, which is very low. Check whether the portal accepts separate uploads per page, or use the 200KB or 300KB setting if the limit allows. Removing blank backs of pages with Organize Pages also helps.
Yes. Add several files at once. Each one is compressed to the same target and you can download them together as a ZIP.
Yes. Compression runs inside your browser, so your Aadhaar, PAN or certificate never leaves your device.
More pdf tools — all free, no upload.