Compress a PDF to 100 KB.

For job portals, application forms, and upload limits. The target is pre-set to 100 KB — change it to 50, 200, or anything. Compressed on your device, never uploaded.

Open your network tab while it runs: zero requests. Your document stays yours.

How compressing to a target size works

  1. Select the PDF — the target is already set to 100 KB; adjust it if your portal wants 50 KB or 200 KB.
  2. The ladder runs — progressively stronger settings are tried, and the best quality that fits under the limit is kept.
  3. Honest result — you see the exact before/after size. If 100 KB genuinely isn't reachable, we say so and give you the closest.

Need a different limit? The same tool handles 1 MB targets and free-form quality-level compression — and if the file has pages you don't need, deleting pages first shrinks it losslessly.

Compressing to 100KB, honestly answered

Select your PDF above — the target is already set to 100 KB. The tool tries progressively stronger settings and keeps the best quality that fits under the limit. You can switch the target to 50 KB, 200 KB, or any custom number.
Then we tell you the closest honest result instead of pretending. A 40-page PDF physically can't be 100 KB at readable quality — in that case, split it first (our Split PDF tool) or raise the target.
No. Compression runs entirely in your browser — the file never touches a server, which also makes it faster: no upload wait before compression even starts.
Upload limits on job portals, university applications, and government forms — often built years ago. Annoying, but easy to satisfy: set the target here and download a compliant file.
No — honest answer: strong compression re-renders pages as images, which is how the big savings happen. For a size cap this tight, that trade is unavoidable in any tool; ours just admits it.
Still something on your mind? Try it yourself — it's free