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Two honest ways to shrink a PDF. "Optimize structure" rebuilds the file efficiently and keeps text selectable — best for documents. "Strong" re-compresses every page as an image — much smaller for scanned PDFs, but the text becomes part of the image. The result size is always shown before you download.
Your file is processed entirely in your browser — it is never uploaded.
Most PDF weight is images. A scanned page at 300 DPI can be several MB; recompressing it as a quality JPEG cuts that by 80–95%. Text-based PDFs (exported from Word) are already efficient — for those, structure optimization helps a little, and no tool can honestly do much more without turning pages into images, which is exactly what Strong mode does, with the trade-off stated up front.
Optimize mode: no visible change. Strong mode: pages are re-rendered as JPEG images — fine for reading and sharing, not ideal for print at Low quality; use High for print.
Some PDFs are already optimally built. The tool tells you honestly and suggests Strong mode instead of pretending.
Merge PDF — Combine multiple PDFs into one file — in order, free, no upload.
Split PDF — Split a PDF by page ranges, extract pages, or save every page separately.
Organize PDF — Reorder, rotate and delete PDF pages visually — drag and drop.
Rotate PDF — Rotate PDF pages 90°, 180° or 270° — all pages or a chosen range.
Image to PDF — Convert JPG and PNG images to a PDF — one image per page, in your order.
PDF to Image — Convert PDF pages to JPG or PNG images — up to 216 DPI.
PDF to Text — Extract all text from a PDF into an editable .txt file.
Text to PDF — Turn plain text into a clean, paginated A4 PDF document.
Word to PDF — Convert Word (.docx) documents to PDF — free, in your browser.
Excel to PDF — Convert Excel sheets (.xlsx, .xls, .csv) to PDF — in your browser.
Add Page Numbers to PDF — Stamp page numbers on a PDF — "Page 1 of 10", any position.
Watermark PDF — Add a text watermark — CONFIDENTIAL, DRAFT, your brand — to every page.
PDF Metadata Editor — View and edit a PDF's title, author, subject and keywords.
Unlock PDF — Remove a PDF's permission restrictions — printing/copying locks — free.
Resize PDF — Change PDF page size to A4, Letter, Legal or A5 — for clean printing.
PDF Viewer — Open and read PDFs in your browser — with zoom and full-text search.
PDF Editor — Edit PDFs free in your browser — add text, images, highlights and signatures.
Highlight PDF — Highlight text in a PDF with colored markers — free, no upload.
Add Image to PDF — Insert an image, logo or stamp into a PDF — place and resize it freely.
Sign PDF — Sign a PDF online — draw, type or upload your signature, free.
OCR PDF — Turn a scanned PDF into real, copyable text — OCR that runs in your browser.
Make PDF Searchable — Add a hidden OCR text layer to a scanned PDF so Ctrl+F and copy-paste work.
PDF Form Filler — Fill in real PDF forms — text fields, checkboxes, dropdowns — and save.
Extract Images from PDF — Pull the original embedded photos and graphics out of a PDF.