Compress pdf to 1mb

To compress a PDF to 1 MB, open Compress PDF, leave the level on Recommended, and compress. Most scanned documents of a handful of pages come out under 1 MB at that level with text still sharp. Still over? Compress the original again on Strong, and if a long scan stays too big, rebuild it from smaller images or split it. Compress PDF is free for PDFs up to 50 pages.

A 1 MB limit is one of the most common caps on online forms: government services, state and central recruitment portals, scholarship schemes, bank KYC and university applications all use it for document uploads. It's also roughly where many people first hit a wall, because a single page scanned at a copier's default settings can be 1-3 MB on its own.

How much room 1 MB gives you

1 MB is 1,024 KB on Windows and in EveryApp, though some portals count 1,000 KB. Aim for about 900 KB.

Pages	Budget per page	What that needs
1-2	450-900 KB	Almost any scan fits after Recommended
3-5	180-300 KB	Recommended usually; Strong for colour scans
6-10	90-150 KB	Strong, and possibly a rebuild
10+	under 90 KB	Split it, or rebuild at a low resolution

The per-page number is the one to watch. A 12-page bundle at 1 MB leaves about 75 KB a page, which is tight for anything but plain greyscale text.

Step by step

1. Open Compress PDF. If you're not signed in, sign up free first.
2. Under How much to compress, choose a level. Start with Recommended: much smaller, still sharp.
3. Click Choose a file and pick the PDF (up to 100 MB).
4. Click Start and wait for the progress to finish.
5. Click Download result. The result is available for 1 hour.
6. Check the file's size in your file manager. If it's under about 900 KB, open it, zoom in on the smallest text, and upload.

Which setting gets you to 1 MB

Level	Keeps about	Use it when
Light	200 pixels per inch, high JPEG quality	You're only slightly over 1 MB, or the document has fine print you must keep
Recommended	150 pixels per inch, good JPEG quality	The usual choice; try it first
Strong	100 pixels per inch, lower JPEG quality	Recommended wasn't enough, or there are many pages

Always compress the original again at a different level, rather than compressing the compressed copy. Each pass of JPEG re-saving loses a little more detail.

Only scans and photos are shrunk. Typed text, lines and fonts stay as they are at every level. If your PDF is mostly typed and still over 1 MB, the cause is something else, like dozens of pages or a large embedded image the compressor can't touch, and the tool tells you it's already about as small as it can get (a saving under about 10% isn't applied or counted).

If the scan stays too big

Some scans resist: very long bundles, colour scans with busy backgrounds, or black-and-white fax-style scans the compressor leaves alone because they're usually already compact. Free options that work on your device:

Lower image quality before making the PDF. If you're making the PDF from photos or scanner images, this is the most effective fix. Resize each page image to about 1200 pixels wide with the free image resizer, compress it as JPG at about 70% with the free image compressor, then build the PDF with the free JPG to PDF converter. Text pages typically land around 100-250 KB each, so four or five pages fit under 1 MB. Our scanning guide for online forms has the full method.

Rescan with better settings. If you're at a scanner, choose 150-200 dpi and greyscale for plain text documents. The PDF comes out a fraction of the size of a 300 dpi colour scan.

Split into the uploads the form actually asks for. Many portals have separate slots for each document. Use the free PDF splitter with A PDF for each range (for example 1-2, 3-4, 5-) so each certificate is its own file, each far below 1 MB.

Drop pages nobody asked for. Blank backs, instruction pages and duplicates add size. To shed their KB, remove them with the free PDF page remover. It builds a new file from the pages you keep, so their KB really go.

India form-portal tips

• Read the notice for the format too, not just size. Many portals want PDF for documents and JPG for photos and signatures, and some set a minimum size as well.
• Some forms want all documents merged into one file under 1 MB, others one file per document. If it's one file, compress each document first, then join them with the free PDF merger; check the merged size.
• Upload in good time before deadlines. Portals are often slow near the last date, and an upload that times out is easy to mistake for a size problem.
• Keep the compressed copy with a clear name, such as degree-certificate-1mb.pdf, so you can reuse it for the next application.

For tighter caps, see compress a PDF to 500 KB and compress a PDF to 200 KB. For email attachments rather than forms, see compressing a PDF for email.

Trying Compress PDF free

Compress PDF is free for PDFs up to 50 pages, with no daily limit. Pro handles files up to 100 MB; see pricing. Your PDF is uploaded for processing, deleted as soon as it's compressed, and the smaller copy is available for 1 hour.

Get it under 1 MB now

Open Compress PDF, start with Recommended, and switch to Strong only if you need to. If a long scan won't fit, rebuild it from smaller images with the free JPG to PDF converter.