Why 1 MB?
1 MB is the most common upload limit you will meet for job applications, university and college admissions, visa and appointment systems, conference submissions and many online government services. It is also a considerate size for email. Gmail allows attachments up to 25 MB, but a 1 MB file opens instantly on a phone and does not fill anyone’s inbox. A CV, a portfolio extract or a scanned bundle of 10 to 20 pages can all be made to fit while staying sharp.
This page aims for the best possible quality under 1 MB automatically.
How it works
- No work if not needed. If your PDF is already under 1 MB, you can download it unchanged.
- Lossless first. Unused objects, duplicate fonts and images, embedded thumbnails and badly compressed data are cleaned up. Text stays selectable and links keep working. Most CVs, cover letters, reports and theses exported from Word, Google Docs, Pages or LaTeX get under 1 MB at this step.
- Image compression only when needed. For scans and image-heavy PDFs, the tool samples a few pages at several resolutions and JPEG qualities, predicts the final size, and picks the highest-quality setting predicted to fit. After compressing all pages it checks the real size and adjusts if necessary.
- A clear report. You see before and after sizes and the settings used. If 1 MB cannot be reached at a readable quality, you are told and shown your options.
The target is 1,000,000 bytes, slightly below the 1,048,576 bytes some systems call 1 MB, so your file passes under either definition.
Keep your CV as text
A CV that is turned into images may look fine, but applicant tracking systems read the text to match keywords, and an image-only CV can be parsed as empty. That is why this tool always tries lossless compression first and only turns pages into images when it has to. If your CV is over 1 MB, the usual cause is a large photo or a decorative background. Compress the image before you export (try Compress Image), or remove it, and the PDF will usually drop well under 1 MB with its text intact.
What fits in 1 MB?
| Content | Typical size before | Usually fits? |
|---|---|---|
| CV or cover letter exported from Word | 50–500 KB | Already fits |
| CV with a large photo or background image | 1–5 MB | Yes, often losslessly |
| 20-page report with charts | 1–6 MB | Yes |
| 10 scanned pages in colour | 10–30 MB | Yes, at about 100–150 dpi |
| 40 scanned pages | 30–80 MB | In black and white, at lower resolution |
| Design portfolio, 15 full-page images | 20–60 MB | Possible, with visible softening |
As a guide, 1 MB leaves roughly 97 KB per page for 10 pages and 48 KB per page for 20. A readable colour A4 scan at 100 dpi needs about 60–120 KB.
Worked example
An applicant’s university admission form needs “previous qualifications, single PDF, max 1 MB”. They merge four scanned certificates and a two-page transcript into a 6-page, 11.2 MB PDF.
- Lossless: 11.0 MB. The pages are photos, so little changes.
- Colour image compression: the tool selects 150 dpi at 65% quality, giving “11.2 MB → 902 KB”. Seals and signatures keep their colour, and small print in the transcript is sharp.
Had they also included 14 pages of a thesis exported from Word, the better move would be to keep the thesis as a separate text PDF (tiny and searchable) and compress only the scans.
Compared with typical online compressors
| This page | Typical online PDF compressors | |
|---|---|---|
| You set an exact limit (1 MB) | Yes, it searches for the best fit | Usually fixed presets such as “low, medium, high” |
| Tells you if the limit is impossible | Yes, with the smallest size reached | Rarely; you keep guessing |
| Your file is uploaded | No, it stays on your device | Yes |
| Large files | Free, unlimited | Often capped on free plans |
Tips for the best result
- Merge first, then compress when a portal wants one file: Merge PDF combines everything, and this tool shares the budget across all pages.
- Tick Black and white for typed or printed documents. Colour rarely matters there, and greyscale buys a sharper resolution.
- Need text from a scan? Compress first, then add an invisible text layer with OCR PDF, or convert to an editable document with PDF to Word.
- Different limit? Type it into the box (for example 2 MB or 750 KB), or use the 500 KB page.
Private and unlimited
Your PDF is compressed in your browser. It is never uploaded, there is no sign-up or watermark, and you can compress as many files as you like.