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Compress PDF to 500 KB

500 KB is a comfortable limit for a single document and a workable one for a short file of several pages. Visa and recruitment portals use it for passports, degree certificates and experience letters. No upload in browser modeNo sign-upNo daily limit

1) PDF file

Drop a PDF here, or click to choose

2) Target size

Unit

Preset to 500 KB. Change it if your form says otherwise. 1 KB = 1,000 bytes here, so the file also passes sites that count 1,024.

3) Where to compress

In your browser recommended On our server

Black & white (smaller, good for text scans)

⚠️ Output is an image-based PDF (text is not selectable). Other sizes: 100 KB · 200 KB · 300 KB · 1 MB · any size

What fits in 500 KB

At 500 KB, three pages each get about 160 KB, which bought 109 dpi in our test — clear on screen. Six pages still reached about 96 dpi, and ten pages about 72 dpi, where normal-size text remains readable. Single pages can stay at 200 dpi, the highest setting this tool uses.

Pages	Test file	Result	Resolution reached	Readability
1	ID-style scan, 1.0 MB	455 KB	200 dpi · q72	sharp, prints well
2	photo pages, 1.4 MB	499 KB	163 dpi · q72	sharp, prints well
3	colour text scan, 2.5 MB	486 KB	109 dpi · q72	clear on screen
6	grey text scan, 6.1 MB	476 KB	96 dpi · q50	normal text readable
10	mixed scan, 5.0 MB	480 KB	72 dpi · q50	normal text readable

Measured on 16 October 2026 with this tool in browser mode on our own test PDFs (synthetic A4 scans with paper noise, which is harder to compress than a clean office scan). Your numbers will differ; cleaner scans get higher resolution. “q” is the JPG quality the tool settled on. Readability labels are a rough guide: 100 dpi and up is clear on screen, 70–100 dpi keeps normal-size text readable, below 50 dpi only large text survives.

Where you will see a 500 KB limit

Indian e-Visa. The document upload page sets PDF files to a minimum of 10 KB and a maximum of 500 KB (indianvisaonline.gov.in — Document Upload).
Recruitment portals. For example, the Sardar Patel University of Police, Security and Criminal Justice (Rajasthan) 2022 recruitment required A4 PDF documents “not exceeding 500 KB” (SPUP document upload guidelines).

If it won’t go below 500 KB, try this

Mind the minimum too.The e-Visa page also has a 10 KB minimum. Our output never comes near that, but a blank page might.
Send passport pages as one PDF.Join the photo page and address page with Merge PDF, then compress once — two pages at 500 KB look much better than two separate 250 KB files.
Straighten crooked scans first.A tilted page has more edges to store. Rotate PDF fixes 90° turns; for small tilts, rescan.
Ten pages or more?Use Black & white, or split the file if the portal allows several uploads.

Questions

Is 500 KB enough for a 10-page document?

For typed or printed text, yes — our 10-page test landed at 72 dpi, still readable at normal sizes. Handwriting and small print will be soft.

Does the e-Visa portal accept image-only PDFs?

The upload page lists only the format and size limits. An image-based PDF is a normal PDF, so it meets both.

Can I compress several files at once?

Not yet. Merge them first if the portal wants one file, or compress them one by one.

Why does the result sometimes land well under 500 KB?

If the file fits at the highest setting (200 dpi, quality 80–88), there is no point in making it bigger.

Compress PDF to 500 KB

What fits in 500 KB

Where you will see a 500 KB limit

If it won’t go below 500 KB, try this

Questions

Compress to another size

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