Compress PDF to 900 KB

Q: What if the form literally says 1000 KB?

Then [compress PDF to 1000 KB](/compress-pdf-to-1000kb) explains how sites count that number and starts at it. 900 KB passes as well; it just gives up a little quality you may not need to lose.

Forms that cap uploads at 1 MB reject files that look like 1 MB on your screen surprisingly often. 900 KB clears every version of that limit, so this page is preset to it.

or drop PDF files here ·

Max 95 MB per file· Up to 20 files· Deleted after 30 minutes

Compression

Compress by

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Files are processed on our servers and deleted after 30 minutes.

How to use this tool

1
Upload the PDF for the form
Add the document you need to attach. A batch of up to 20 files works, each up to 95 MB, and every file is sized to 900 KB on its own.
2
Leave the target at 900 KB
Target size is 900 KB. Change it only if the form names a different number.
3
Compress, then attach
Press Compress, download the result and upload it to the form; it is at or under 900 KB.

900 KB is the size that never fails a 1 MB field: about 100 KB of headroom, and no visible loss on a typical document.

Compress PDF to 900 KB for 1 MB upload fields

Form builders make 1 MB an easy choice. In Google Forms, a file upload question lets the form owner pick a maximum file size, and 1 MB is the smallest option on that list, so teachers, clubs and small offices collecting signed PDFs often end up with it. Self-hosted school and HR portals inherit their limits from server settings: PHP, which runs a large share of these systems, ships with a default upload_max_filesize of 2 MB, and administrators often tighten that per field.

None of these systems say how they count. Some compare against 1,000,000 bytes, some against 1,048,576, and your own computer may show either. Aiming at the line itself is a gamble. Aiming at 900 KB is not, and the cost is small: the compressor gives up roughly a tenth of the image budget, which on a normal document is invisible at screen size.

900 KB in numbers

preset target size: 900 KB
headroom under a 1 MB field: ~100 KB
PDFs per batch, sized one by one: 20
until uploads and results are deleted: 30 min

What changes inside a PDF compressed to under 900 KB

Scanned pages and photos: Re-encoded as JPEG at the highest quality that fits; resolution drops only after quality reaches Lowest image quality.
Typed text: Stays as text. It remains selectable, searchable and sharp at any zoom.
Charts and logos drawn as vectors: Kept untouched. Charts pasted in as screenshots are images and are compressed like photos.
Embedded fonts: Subset fonts keeps only the characters used, which can save tens of kilobytes on files with several typefaces.
Form fields: Left editable unless you turn on Flatten form fields, which makes typed answers part of the page.

If a document still will not reach 900 KB without soft text, the images are the reason, and two choices remain: Convert to grayscale, or upload fewer pages. Many forms that cap a field at 1 MB expect one document per field, so a single certificate or a two-page letter rather than a full portfolio. When a form allows the full 1 MB and you want every last kilobyte of quality, compress PDF to 1 MB uses the whole allowance.

900 KB PDF questions

Why did my Google Form reject a PDF that is under 1 MB on my computer?

The form checks bytes, and a file your system rounds down to "1 MB" or "0.99 MB" may still be slightly over the form's count. Compressing to 900 KB removes the doubt; nothing in a typical document looks different at that size.

How many pages fit in a 900 KB PDF?

Roughly 10 to 20 scanned pages in grayscale at about 150 DPI, or four to eight pages in color. Typed documents with a few charts fit at almost any length, because text and vector drawings cost very little.

Does a 900 KB PDF still work for printing?

For a short document, yes; images stay near 150–200 DPI, which prints cleanly on an office printer. A long scan squeezed to 900 KB prints legibly but not crisply, so keep the original for paper copies.

Can I make the compressed file searchable?

Compression does not add a text layer. If your scan has none, run it through OCR PDF first; the recognized text adds only a few kilobytes and lets the reviewer search and copy.

What if the form literally says 1000 KB?

Then compress PDF to 1000 KB explains how sites count that number and starts at it. 900 KB passes as well; it just gives up a little quality you may not need to lose.

Is Fast web view worth turning on for a 900 KB file?

Turn it on when people will open the PDF in a browser, for example from a link in a form response. Page one appears before the rest has loaded, and the file size barely changes.