Some corporate document portals and email gateways enforce 300 KB upload limits. PDFKits Compress PDF to 300 KB hits this target with balanced compression — better quality than 100 or 200 KB targets while still being substantially smaller than typical 2-5 MB PDFs. Free, in your browser, no upload, no signup.
At 300 KB, text quality is essentially identical to the original (small font subset, lossless text compression). Images keep more detail than at 200 KB but are still visibly compressed. Suitable for compact archives, email-friendly file sizes, and any portal that targets ~300 KB.
Drop the file. PDFKits projects achievable size based on content type.
Click Compress to 300 KB. PDFKits iterates image downsampling (~150 DPI) and JPEG quality (~70) until the output lands at the target.
The compressed file downloads with size shown vs original.
Email systems with moderate limits (10-20 MB total) favor compact PDFs to leave room for body text and other attachments.
Mid-tier business systems set 300 KB as a balance between accessibility and quality preservation.
Long-term archives benefit from compact files. 300 KB is a sustainable target for individual document archival.
Public-facing PDFs (downloadable from websites) load fast at 300 KB without sacrificing too much quality.
Free, no signup, runs in your browser. Targets the exact 300 KB size limit without manual iteration. Your file stays on your device — important for confidential content.
Yes — 50% more room for image detail. The difference is most noticeable on image-heavy content; for text-only documents, both look the same.
300 KB if the portal limits below 500 KB or you need the absolute smallest version still looking good. 500 KB if quality matters and there's headroom.
Yes. Print quality is screen-grade — fine for office printers, less crisp than original-quality print for professional printing.
Yes, unless your source PDF has many fields with complex JavaScript — those may be simplified during compression.
Typically 3-10 seconds. The tool iterates a few times to hit the target precisely.
The tool returns it as-is (or applies light compression for marginal improvement). No quality loss in that case.