OPTIMIZE
☞ runs entirely in your browser — nothing is uploadedDrop a PDF here
Up to 100 MB — it never leaves your device
Preview — page 1 at this setting
OneImageTool
Free Image Tools
OPTIMIZE
Make a heavy PDF small enough to email — and see the before and after before you keep it.
Up to 100 MB — it never leaves your device
Preview — page 1 at this setting
photographs of pages
A PDF gets heavy because of what is embedded in it — camera-resolution photographs, a scanner's 300 dpi output, a map exported at print size. This tool redraws each page at a lower resolution and stores it as a JPEG, which is the same trade a scanner makes when you ask it for a smaller file: fewer pixels and a little compression noise in exchange for a document that actually fits in an email.
That trade is worth making for scans, brochures and photo-heavy reports, and it is a bad deal for a plain text document. A page of vector text weighs a few kilobytes; a photograph of that same page weighs tens of kilobytes, so a text-only PDF comes out bigger than it went in. This tool tells you which one happened before you download anything, so you are never handed a worse file without being told.
three steps
It is opened in the browser with the same engine that renders our PDF previews. Nothing is uploaded, so a contract, a passport scan or an invoice stays on your machine.
The preview is the first page after the full round trip — redrawn, compressed and decoded again — so what you see is what the finished file will look like. Balanced suits most scans; drop to Strong when the file still needs to be smaller.
Pressing Compress does the work and shows the old size next to the new one. The download button only appears after that, so you can try another level first if the saving is not what you hoped for.
quick answers
No. Each page becomes a single image, so the words are pixels rather than characters. If you need the text to stay selectable and searchable, keep the original — or pull the words out first with our PDF to Text tool.
It was almost certainly a text document with no photographs in it. Vector text is already about as small as a page gets, and turning it into a picture adds bytes rather than removing them. Keep the original in that case; there is nothing here worth compressing.
Start with Balanced. It is roughly the resolution of a good screen, which is enough for reading and for most printing. Light is for pages you will zoom into, Strong for when a size limit matters more than the fine detail.
A scanned document usually loses seventy to ninety per cent. A report full of photographs lands somewhere in the middle. A text-only file will not shrink at all. The tool measures the real result rather than estimating, which is why it compresses first and offers the download second.
Yes. Every page keeps its original dimensions in points and its rotation, so the compressed file prints at the same size as the original and has the same number of pages in the same order.
They are not carried over. Anything interactive — clickable links, form fields, annotations, the outline — lives outside the visible page and cannot survive being flattened into an image.
Files up to 100 MB are accepted. Pages are processed one at a time so memory stays flat no matter how long the document is, but a few hundred pages will take a while — the progress line tells you where it is.
No. The file is read, redrawn and rebuilt inside your browser, and the result is written straight to your downloads. There is no server in this tool to send a document to.
Yes — free with no watermark.