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Initializing Secure Environment…
Reduce PDF file size by up to 70% free — no file size limit, no sign-up, no watermark. Choose Light, Medium, or Heavy compression. Text stays perfectly sharp at every level because PDF text is stored as vector data, not pixels. The compression engine runs locally in your browser — your documents never leave your device, and there is no artificial cap on how large a PDF you can compress.
To compress a PDF free with no size limit, choose a compression level and let it process in your browser — no sign-up or upload required. On ihatepdf, upload your PDF (large files welcome), pick Light, Medium, or Heavy compression, and download a file up to 70% smaller. Text stays perfectly sharp and your document never leaves your device.
Most compressors give you Low, Medium and High and leave you to discover afterwards whether the result fits. That is fine when you just want a smaller email attachment and useless when a portal will reject anything over 1MB. Target-size mode takes the number instead: set 1MB, 2MB, 5MB, 10MB or whatever the form demands, and the compressor searches for settings that land under it, reporting the size it reached and the quality cost. When a target genuinely cannot be met — a two-hundred-page colour scan will not become 200KB with anything left to read — it says so and shows you the floor rather than silently returning a file that misses. Aim slightly under the stated limit: some upload forms measure after their own re-wrapping and a file exactly on the line can still bounce.
When another compressor advertises a 100MB limit, that number is their bandwidth budget: your file has to travel to their servers, sit in a queue, get processed on hardware they pay for, and travel back. Every megabyte costs them money, so the ceiling exists and the paid tier raises it. Here the file never moves. The compression engine is downloaded once to your browser and the PDF is processed where it already is, which removes the economics that create limits in the first place. A 1GB scanned archive is not a special case requiring an upgrade — it is just a longer wait on your own processor.
Big PDFs are almost always big for one of two reasons: hundreds of scanned page images, or a handful of enormous embedded photographs. Both are handled by resampling and re-encoding the images while leaving the text layer untouched as vector data, which is why text stays sharp no matter how hard the file is squeezed. Documents in the hundreds of megabytes are processed page by page to keep memory flat, so the tab does not run out of memory part way through. If a file genuinely cannot be reduced much further — because it is already efficiently encoded — the result explains why rather than silently handing back a file the same size.
Job application portals and applicant-tracking systems frequently cap CV and resume uploads at 1–2MB, and a single high-resolution photo or designed template can easily push a one-page CV over that limit. Compressing your CV PDF fixes this in seconds without re-exporting from Word or a design tool. Upload your resume, choose Medium compression (or Heavy for the strictest portals), and download — the text stays perfectly sharp so recruiters and automated screening systems read it without issue. Because everything runs locally, your CV with all its personal details is never uploaded to any server.
Many free online compressors silently cap uploads at 10–50MB or throttle large files behind a paywall. ihatepdf has no artificial size limit because it does not upload your file at all — compression runs inside your browser tab, so the only real limit is your device memory. This makes it ideal for compressing scanned books, high-resolution presentations, multi-hundred-page reports, and other heavy PDFs that hosted services reject. For extremely large documents, close other browser tabs first to free up RAM, or split the PDF into sections, compress each, and merge them back.
Need to hit an exact upload limit? Use the size-targeted compressors — each tuned for that limit, all free with no upload:
Large PDFs get rejected by email providers, fail to upload to job application portals and government forms, slow down document sharing, and consume unnecessary cloud storage. Gmail blocks attachments over 25MB, Outlook caps at 20MB, and many HR portals and government forms enforce 2–5MB limits. Compressing removes redundant data, optimizes embedded images, subsets fonts, and strips hidden metadata — shrinking the file dramatically while keeping the visual content intact. Text quality is never affected at any compression level.
Most online PDF compressors — ilovepdf, smallpdf, Adobe Acrobat online — upload your file to their servers to process it. For sensitive documents like CVs, contracts, medical records, and financial statements, this creates unnecessary privacy exposure. ihatepdf runs the entire compression pipeline inside your browser tab. Your file bytes never reach any server — not even ihatepdf's. The tool also functions completely offline: once the page loads, disconnect your internet and it still compresses perfectly.
Six optimizations run together: (1) Image downsampling — each image is resampled to the target DPI, computed from the size it is actually drawn at on the page rather than guessed; (2) Measured re-encoding — every image is encoded several ways (JPEG, Flate, an indexed palette, CCITT G4 for scanned pages) and whichever comes out smallest is kept; (3) Font subsetting — embedded fonts are trimmed to only the characters used in the document, often a few dozen glyphs out of several thousand; (4) Font conversion — legacy Type 1 fonts are rebuilt as CFF, which stores the same outlines far more compactly; (5) Stream recompression — every stream is recompressed at maximum effort and byte-identical objects are shared; (6) Cleanup — metadata, thumbnails and unreachable objects are dropped. Text and vector graphics are never rasterized.
To compress a PDF under 1MB: use Heavy compression. For most image-heavy PDFs this is achievable in one pass. To compress for email under 25MB: Medium compression handles the vast majority of files. To meet government portal limits of 2–5MB: start with Heavy compression. If still too large, use the Split PDF tool to divide the document into smaller sections and compress each section separately. A 15MB scanned document typically becomes 2–3MB on Heavy compression.
Yes. Switch from compression level to target size, type the number you need — 1MB, 2MB, 5MB, 10MB or anything else — and the compressor works towards it instead of guessing. It reports what it actually reached and what it traded away to get there, and tells you plainly when a target is not achievable rather than handing back a file that quietly misses it.
It depends which kind you mean, and the honest answer differs. A cryptographic digital signature — the kind that certifies the document and shows a validity panel in Acrobat — is broken by any change to the file at all, so compressing a signed PDF invalidates it. That is true of every compressor, not just this one; compress first, then sign. A visible signature image, which is what most job-portal and government forms mean, survives compression: it is re-encoded like any other image, so use target-size or Light so it stays crisp rather than Heavy, which can make fine pen strokes muddy.
Portals usually state a hard ceiling — often 1MB, 2MB or 5MB per document. Use target size, set it slightly below the stated limit so encoding overhead does not push you over, and check the preview before submitting. If the document is a scan, most of the size is the page images, so a target a little above what you asked for is usually reachable without the text going soft.
Yes. There is no upload step, so there is no server-side file size limit to hit — the constraint is your own device memory rather than someone else's quota. Very large scanned documents are processed page by page, so a 1GB file works, it simply takes longer than a 5MB one. Leave the tab open while it runs.
Unlimited, with no hidden cap. There is no daily quota, no "2 files per hour" throttle, and no size ceiling that triggers a paywall. Free online compressors impose those limits because every file costs them bandwidth and CPU; this one costs nothing to run because it runs on your machine.
Yes. Add multiple files and they are compressed in sequence with a combined progress readout, then returned together as a ZIP. Useful for a folder of scanned invoices or a batch of application documents that each need to fit a size limit.
Most mail providers cap attachments at 25MB, and many corporate systems at 10MB. Use the target-size mode, type the size you need, and the compressor works towards it rather than guessing — it reports what it achieved and what it had to trade away to get there.
Scanned documents compress 50–70%. Presentation PDFs with photos compress 40–60%. Text-heavy CVs and reports compress 10–30% since text is already stored as vectors. A 10MB scanned document typically becomes 2–4MB on Heavy compression.
Never. Text in PDFs is stored as vector data — it is completely unaffected by compression. Only raster images (photos, scanned pages, illustrations) are optimized. Text stays perfectly sharp at every compression level.
Choose Heavy compression. If still over 1MB, the PDF has many high-resolution images. Split it into sections using the Split PDF tool, then compress each part individually.
Gmail limits attachments to 25MB. Outlook to 20MB. Most HR portals cap uploads at 2–5MB. Use Medium compression for most cases. Switch to Heavy if the file is still too large.
No. Everything runs locally in your browser using WebAssembly. Your PDF never reaches any server. The tool also works fully offline once the page has loaded.
No artificial limit. The practical constraint is your device RAM — typically 100–150MB on desktop browsers. For very large PDFs, close other tabs to free up memory.
Not directly. Remove the password first using the Remove Password tool, compress it, then re-encrypt using the Encrypt PDF tool if needed.
Light (20–30%) resamples images to 300 DPI — ideal for professional printing. Medium (40–50%) targets 150 DPI — perfect for screen viewing and sharing. Heavy (60–70%) targets 72 DPI — maximum size reduction for archiving or portal uploads.
Adobe Acrobat uploads your file to Adobe servers and requires a paid subscription. ihatepdf runs entirely in your browser — no upload, no account, no subscription. Completely free.
There is no artificial limit. The only constraint is your device RAM — typically 100–150MB on desktop browsers. Unlike most online compressors that cap free uploads, ihatepdf processes locally, so large PDFs are handled directly on your machine. Close other tabs to free memory for very large files.
Upload your CV PDF, choose Medium compression (Heavy if the portal limit is strict, like 2MB), and download. Most CVs with a photo or design compress 30–60%. Text stays crisp so recruiters and applicant-tracking systems read it perfectly — and your CV is never uploaded to our servers.
Yes. ihatepdf never asks for an email, account, or sign-up. Open the page, compress, and download. There is nothing to register and no usage quota.
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