Initializing secure environment…
Initializing secure environment…
Shrink a PDF by 20 to 70 percent with three compression levels you can actually see the difference between. Images get recompressed and redundant structure is dropped; vector text is reflated rather than rasterised, which is why the words on the page stay sharp at every level. Nothing is uploaded, so compressing a 90 MB scan of your passport is as private as compressing a one-page CV. No sign-up, no watermark, and it keeps working offline.
To compress a PDF free, upload the file, pick Light, Medium or Heavy, and download the result. Typical savings are 20–70%, with image-heavy documents compressing the most and text staying sharp at every level.
Gmail stops at 25 MB and Outlook usually at 20–35 MB. Compress first and check the measured result; if it is still over the cap, the correct next step is not more aggressive compression but Split PDF by Size, which produces several parts that each fit.
A text-only PDF is already near the theoretical limit of its text encoding. The bytes are not being wasted — there is simply very little slack. If you need real savings, change the content: flatten, remove unused resources, or lower image resolution in the source document before export.
Light for documents that will be printed. Medium is right for almost everything sent by email or uploaded to a portal. Heavy for files that only need to be readable on a screen, where a slight softening of a photo is an acceptable trade for half the size.
The DPI at which the page was scanned is the ceiling on quality. A 300 DPI A4 scan already looks sharp on paper; re-encoding it at 600 DPI gains nothing and costs four times the bytes. Compress an existing scan rather than re-scanning it, and let the preview be the judge.
Use one level for the whole batch, or a target size instead. Per-file variance comes from content, not from the compressor, so a batch compressed at Medium will vary by document type in exactly the way you would expect.
20–70% for most documents. Image-heavy files — scans, photo catalogues, slide decks exported to PDF — compress far more, sometimes 85%. A PDF that is mostly live text and vector graphics may only shed 5–10%, because the text is already compressed. If you need 90% off a text document, the only honest answer is to lower the image resolution inside it.
No. Text is never rasterised. Vector glyphs are re-encoded with a stronger deflate setting, which changes the bytes but not the shapes. Images are the only thing that loses information, and only at Medium and Heavy — which is why the preview exists.
Usually one of three things: the file is mostly text that was already compressed, the images are already at their target resolution, or the document contains an embedded font set that dominates its size. Removing unused resources with Flatten PDF often helps more than another compression pass.
Yes, if you can supply the password. Compressing re-writes the file, so the original encryption is dropped in the process. Unlock it with Remove Password first, compress, then re-encrypt with Encrypt PDF if you want the protection back.
Often, but not always, and the tool will tell you when a target is unreachable rather than lying about it. If a scanned page at a readable resolution simply cannot fit in 100 KB, no honest compressor can make it. For fixed government caps use the dedicated 100 KB, 200 KB and 2 MB tools, which show the measured result before you download.
No. Page count, order, text and page size are all preserved. Only the encoding of images and streams changes. If you want fewer pages, use Split PDF or Organize Pages.
No limit of our own. The limit is your device's memory: around 150 MB on a desktop, 75 MB on a tablet, 50 MB on a smartphone, per file. Compression itself adds memory pressure because the original and the result are both held at once.
Yes. Add multiple files and each one is compressed and offered as a separate download, or as a single ZIP if you prefer one click.
Yes, and this is the tool where offline matters most. Because your CV, your marksheet and your bank statement never leave the tab, you can compress them on a machine with no network access at all.
More essential pdf tools — all free, no upload.