Email services often limit attachments to 5–10 MB, and many portals require PDFs under 500 KB. Here is the fastest way to get any PDF under that threshold for free.
Go to pdfeditor.onl/compress-pdf. Upload your PDF. Select Good compression. Check the result size — most documents reach well under 500 KB with Good compression.
Tip: The size preview shows before and after sizes instantly. If Good compression does not reach 500 KB, switch to Strong before downloading.
If the file is still over 500 KB after Good compression, select Strong. Strong compression re-encodes all embedded images at lower resolution and typically reduces size by 70–90%.
For documents with many pages that remain over 500 KB even after Strong compression, split the document into smaller sections at pdfeditor.onl/organize-pdf and compress each part separately.
Most text-heavy PDFs compress to under 100 KB on Strong. Image-heavy PDFs typically reach 200–500 KB depending on the number and size of images.
For text documents, no — text is vector-based and stays sharp. Images will lose some quality on Strong compression but remain readable.
Yes — completely free at pdfeditor.onl/compress-pdf.