Can I compress a PDF to 100KB for free?
Yes, you can set 100KB as the target for free. Choose Target Size, select the 100 KB shortcut, and compress. The tool tries to get at or below the limit, not exactly 100KB. A long or detailed PDF may not fit; check the actual output size and readability before uploading it elsewhere.
How does the target size compression work?
If the file is already under the target, it is kept unchanged. Otherwise the tool recompresses the images inside it, stepping down from the best quality until a step fits, then fine-tuning between that step and the one above it to keep the sharpest result that still fits. Text and links are not touched. If no step fits, you get the smallest result and a note saying the target was missed; turning the pages into pictures can go smaller still, at the cost of selectable text. Everything happens in your browser.
Is my PDF uploaded anywhere?
No. Nothing is uploaded. Compression runs on your device, in your browser, and your file, whether it is a tax record, a scanned ID, or a contract, never leaves it. There is no processing server. For offline use, install PDkef and let its required assets load while connected.
What is the difference between the compression levels?
All three recompress only the images. Extreme scales each image to at most 1000 pixels on its long side at JPEG quality 40, Recommended to 1600 pixels at quality 60, and High Quality to 2400 pixels at quality 80. Text and drawings are the same at every level. The saving depends on how much of the file is images, so a PDF that is mostly text may not get smaller. Target Size steps down through these, and further when it needs to, until the file fits.
Does compressing a PDF affect text search or copying?
No. Compressing recompresses only the images, so text stays selectable and searchable, and links keep working. The one exception is the Turn pages into pictures switch, which you turn on yourself: it makes each page an image, so the result loses selectable text and links. Keep the original if you need them.
Is there a limit on the file size I can compress?
No artificial limit - no daily task cap, no watermark, no paywall. Most online compressors impose limits because server processing costs them money. This tool runs entirely on your device, so the only constraint is your device's available memory.
Can I target a custom size, like 110KB or 250KB, not just the presets?
Yes. The 100 KB, 200 KB, 500 KB, and 1 MB quick-picks are shortcuts. Enter your own limit in the KB field, then check whether the downloaded result met it. A target is not a guarantee that every PDF can fit while remaining readable.
Does this tool resize a PDF?
This tool changes file size, not page dimensions. Target Size shrinks how many bytes the file takes up on disk. It does not change the paper size or page dimensions, and every page keeps its original width and height. If you need to change the page size itself, this is not that tool.
Is this a PDF size reducer?
Yes. Choose Target Size, pick or enter a limit like 100KB, and the tool shrinks the images inside the PDF to get at or below it, keeping text and links as they are. If the images alone can't get the file under the limit, it says so and shows the smallest size it reached.
