Email attachments over 10 MB
Gmail, Outlook and most corporate mail servers reject or wrap very large attachments. A 1 MB target keeps the document intact and the message deliverable.
Runs entirely in your browser
Compress a PDF to 1 MB
1 MB is generous enough to keep images genuinely sharp — the right target when quality matters more than the smallest possible file.
Verified 1 MB ceilingText stays selectable when possibleNo upload
- No uploads
- No account
- No watermark
document.pdf
——Analysing…
Advanced options
Your file stays in this browser tab. Closing it deletes everything.
Compressing your PDF…
0%Preparing…
Large files can take a minute. The interface stays responsive — you can keep scrolling while it works.
That file could not be compressed
No uploadNo sign-upNo watermarkWorks offline
Files never leave your deviceNo uploadsNo accountNo watermarkNo file storageWorks offlineOpen target sizesMeasured output
The realistic picture
What 1 MB actually means for your document
A 1 MB limit is common on email services, cloud forms and document portals. Because the budget is larger, this is where a good compressor can be almost lossless: the structural pass plus mild image recompression often gets a 3–10 MB document under 1 MB with no visible difference at normal viewing size.
The trade-off changes with content. A 100-page text report is already small and may barely need work. A 40-page photo-heavy brochure will need real image downscaling. The tool measures both and reports which strategy was used, so you know what changed.
Where this limit shows up
Four situations that ask for 1 MB
Insurance and legal document sets
Mixed text and scanned evidence bundles benefit from 1 MB: scans stay legible while the file stops being unwieldy.
Marketing one-pagers and decks
Image-heavy layouts can be reduced substantially while keeping enough resolution for screen sharing and on-screen reading.
Archiving without visible loss
If you only need the file to be smaller and not tiny, 1 MB is the conservative choice that avoids artefacts on photographs.
Honest expectations
What fits in 1 MB, and what does not
These are typical outcomes from real documents, not promises. The compressor reports the measured result for your specific file.
| Document type | Outlook |
|---|---|
| 100+ pages of text | Near-lossless; small reduction. |
| 30-page report with photos | Excellent quality, substantial savings. |
| Scanned bundle, 20–40 pages | Good legibility, moderate resolution. |
| 50 MB photo book | Large reduction; print quality reduced. |
Keep it private
The file is read in your tab and never transmitted.
Keep it readable
Text and vectors survive unless rasterising is the only option.
Keep it honest
A target is only marked met when the measured bytes fit.
Questions about compressing to 1 MB
Specific answers for this size limit, including when it is the wrong choice.
Why does a text-only PDF barely shrink at 1 MB?
Text and vector content are already compact. If a 2 MB text PDF has almost no images, there is little to remove, and the honest saving might be 10%. Tools that promise 90% on such files are usually rasterising the pages, which destroys selectable text.
Does the compressor ever make a file larger?
It can, if a re-save is less efficient than the original encoding. The tool compares every attempt against the smallest result so far and always returns the smallest file it actually produced — never a larger one.
Can I keep the original filename?
The download keeps your original name and adds a suffix with the target size, for example report-compressed-1mb.pdf. That makes it obvious which file is which when you have several versions.
Are digital signatures still valid after compression?
No. Rebuilding or modifying a PDF invalidates cryptographic signatures, and this is true of every compression tool. If the document must remain signed, keep the original and compress a copy for sharing.
Is 1 MB enough for a 30-page scanned document?
Usually yes at around 100–130 DPI, which is readable on screen. Very small print or detailed stamps may soften. The report shows the DPI used so you can decide whether to try 2 MB instead.
Does this work without an internet connection?
Once the page and its scripts have loaded, yes. All compression happens on your device, so airplane mode does not stop it. That is also the simplest way to verify the privacy claim yourself.
Other limits