Compress PDF to 1 MB

Give it the number the form asked for. The result lands under 1 MB, and your document never leaves this device.

0 uploads
No limits
No signup
Works offline

Where the 1 MB limit comes from

The general-purpose ceiling: plenty of web forms, messaging apps and document management systems use 1 MB as a round number rather than a technical constraint.

What 1 MB actually means for a PDF

One megabyte is a round number rather than a technical constraint, which is worth knowing because it tells you what to expect: the limit was chosen for tidiness, and almost any ordinary document fits. A hundred-page scan compresses under it at 144 dpi, and a text document will usually get there losslessly.

When a file will not reach 1 MB, the cause is nearly always full-page photographs rather than scanned text — a brochure, a portfolio, a report with image plates. Those compress on entirely different terms, and the productive move is to downsample the images specifically rather than push the whole document to a lower resolution and blur the type along with them.

What is realistic at 1 MB

Almost anything fits. A hundred-page scan compresses under 1 MB at 144 dpi, and shorter documents can go to 200 dpi with room to spare. If a document will not reach 1 MB it usually contains full-page photographs rather than scanned text.

At this budget, start with Lossless-lite. If it gets you under 1 MB you keep the text intact and give up nothing at all.

The order that works

Try Lossless-lite first. If it gets you under the limit, you keep selectable text and lose nothing. It takes seconds.
If not, switch to Balanced at 144 dpi. This is where the real compression happens, and where the text becomes an image.
Only drop to 96 dpi if you must. Small print and stamps start to blur below 144, and a document nobody can read is not a document that passed.
If it still will not fit, split it. Most portals that cap a file at 1 MB accept more than one file.

Before you upload it anywhere

Open the compressed file and read it. Check the small print, the signature and any stamp — those are the first things to go when compression gets aggressive, and they are usually the parts the other side cares about. A rejected application costs far more than another minute of checking.

How it works

01Add your PDFDrop it here, click to choose, or paste it from the clipboard.
02The budget is already set to 1 MBChange it if the form you are filling in says something different.
03CompressEach pass re-renders the document and measures the result, until it fits.
04DownloadThe file lands under your limit. Nothing was uploaded to get there.

Questions people actually ask

My PDF is 40 MB and will not go under 1 MB. What is in it?

Almost certainly photographs at full camera resolution, placed at a fraction of their size on the page. A single 12-megapixel image can be several megabytes on its own, and a dozen of them make a document no amount of general compression will rescue. Downsample the images to about 150 dpi for the size they are displayed at and the file usually collapses.

Can any PDF be compressed to 1 MB?

Will the text still be selectable?

Only in Lossless-lite mode. Balanced mode — the one that reaches small targets — renders each page as an image, so the text becomes a picture of text: not selectable, not searchable, invisible to a screen reader. The result screen says which mode produced your file.

What if it cannot reach the target?

The tool tries progressively lower quality and then lower resolution, and if the smallest setting still overshoots it tells you so and gives you that smallest version rather than pretending. At this budget, start with Lossless-lite. If it gets you under 1 MB you keep the text intact and give up nothing at all.

Does it ever go over the limit?

No. The search only accepts a result at or under 1 MB, so what you download is safe to upload. Landing slightly under is normal; landing over would defeat the purpose.

Is the file uploaded to a server?

No. Every page is rendered and re-encoded by your own browser. Nothing leaves the device, which matters when the document is an ID, a payslip or a medical record.