PDF to JPG 300 DPI
PDF to JPG 300 DPI turns each PDF page into a print- and OCR-ready 2480 x 3507 pixel JPG (A4) with pdf.js in your browser, without uploading the file.
Drag and drop, or click to upload a PDF
PDF file · processed on your device, never uploaded
At a glance
- Accepts
- One PDF file
- Outputs
- One 300 DPI JPG per page: 2480 x 3507 px for A4, 2550 x 3300 px for US Letter (PNG also available)
- Where it runs
- Entirely in your browser, on your device
- What leaves your device
- Nothing - the file never leaves your device
- Limits
- No size or page cap; bounded by your device's memory, and full size on phones too
- Account
- Not required - there is no sign-up
- Price
- Free, with no watermark and no usage cap
- Made by
- Visrut
- Last updated
- 11 October 2026
300 DPI is the resolution most people need when a PDF page has to become an image that still prints and reads properly: a form to print and sign, a page for an OCR app, a certificate for an upload portal that only takes JPG. This page starts on Print (300 DPI), so an A4 page comes out at 2480 x 3507 pixels. It runs on pdf.js in your browser, free, and the PDF never leaves your device.
When 300 DPI is the right choice
- Printing at the original size. 300 dots per inch is the usual target for documents and photos on paper.
- OCR. The documentation of Tesseract, the open-source OCR engine, says it works best from 300 DPI. Feed the JPGs to Image to Text.
- Scanned PDFs. A scan only holds the detail it was scanned at. If that was 300 DPI or less, 300 keeps all of it without inflating the file.
- Phones. Unlike 600 DPI, a 300 DPI page fits within the image size iPhone and iPad browsers allow, so you get the full resolution there too.
When to pick something else
- Someone will zoom into or enlarge part of the page, or it is a technical drawing with hairlines: use PDF to JPG 600 DPI.
- The image is only for a screen (a chat message, a slide, a website): 150 DPI on PDF to JPG makes files a quarter to a third the size.
- The portal has a size limit like 200 KB and takes PDF: compressing the PDF itself with Compress PDF may be simpler than converting it.
Pixel size of one page at each DPI
| DPI | A4 (pixels) | US Letter (pixels) | Good for |
|---|---|---|---|
| 150 | 1240 x 1753 | 1275 x 1650 | Screen, email |
| 300 | 2480 x 3507 | 2550 x 3300 | Print, OCR |
| 600 | 4960 x 7015 | 5100 x 6600 | Enlarging, fine line art |
Sizes as the tool writes them, rounded down, so A4 can be a pixel shorter than the 2480 x 3508 quoted elsewhere.
File sizes we measured at 300 DPI
- A4 page of typed text: 0.15 MB (54 KB at 150 DPI).
- US Letter page of dense text: 0.6 MB.
- A4 page of photos: 1.1 MB.
- A4 scanned letter: 2.1 MB as JPG, 9.5 MB as PNG.
- Whole 12-page report: 1.8 MB of JPGs in about 4 seconds.
Measured in desktop Chrome at the default JPG quality of 90; Safari makes somewhat larger files at the same setting. The JPG doesn't store a DPI value, so image viewers may call it 72 DPI. The pixels are what count: 2480 pixels across an A4 page is 300 DPI.
How to use it
- Drop a PDF on the box above, or click to choose it.
- "Print 300 DPI" is already selected. Pick PNG instead for pages of sharp text you'll edit or OCR, if file size doesn't matter.
- Choose all pages, just page 1, or a list like "2, 4-6", then click "Convert to JPG". Each page saves as its own file.
Frequently asked questions
What size is a 300 DPI JPG of an A4 page?
2480 x 3507 pixels (8.7 megapixels). A US Letter page comes out at 2550 x 3300. Printed at its real size, that is 300 dots per inch.
Is 300 DPI good enough for printing?
For documents, yes: it is the usual resolution for printing text and photos at their original size. Go to 600 DPI only if someone will enlarge part of the page or the PDF has very fine line work.
What DPI should I use for OCR?
300 DPI. The Tesseract OCR documentation says it works best on images of at least 300 DPI, and going higher mostly makes files bigger. Our Image to Text tool can read the JPGs this page makes.
My PDF is a scan. Will 300 DPI make it sharper?
No tool can add detail the scan doesn't have. If it was scanned at 300 DPI, converting at 300 keeps every pixel it has; if it was scanned at 200, 300 enlarges it a little. Either way, 300 is a sensible ceiling for scans.
How big are the files?
In our tests at quality 90: 0.15 MB for a page of typed text, 1.1 MB for a page of photos, 2.1 MB for a scanned letter. A 12-page report came to 1.8 MB in total.
Does 300 DPI work on a phone?
Yes, at full size. A 300 DPI A4 page is 8.7 million pixels, well under the 16.7 million that Safari on iPhone and iPad allows for one image. Only 600 DPI hits that limit.