Free PDF to Image (JPG, PNG, WebP)

Worked example

Press "Try a sample PDF". It adds sample-document.pdf, a 3-page A4 document, and the options appear with "Format" on PNG, "Resolution (DPI)" on 150 and the line "Each page: about 1240 x 1755 px". Press "Convert to images". The button counts "Rendering 1/3..." and then reads "Render again", and a grid shows the three pages, each with its pixel size and its KB. Two buttons appear. "Download all (3) as ZIP" saves sample-document-images.zip, which holds sample-document-page-01.png, -02 and -03. "One long image" stacks the pages top to bottom into sample-document-long.png, 1240 pixels wide and 5265 tall. Press the tick on page 2 ("Include page 2") to leave it out, and the count reads "2 of 3 pages selected", and the ZIP button becomes "Download all (2) as ZIP".

Which settings to use, and the limits

• Pick the DPI for where the pictures will be used. The buttons are 72 ("Screen"), 150 ("Standard", the default) and 300 ("Print"). The "Custom DPI" box takes values from 24 to 600. Pixels are the page size in points times DPI divided by 72, so an A4 page of 595 × 842 points is 1240 × 1755 px at 150 and 2480 × 3509 px at 300. The line "Each page: about ..." shows this for page 1. Outside the range the box shows "Enter a DPI between 24 and 600." and "Convert to images" is disabled. The page's own advice is 72 for screens, 150 for documents, and 300 for print or OCR.
• Choose PNG, JPG or WebP on purpose. PNG is the default and is lossless, so it has no quality slider. JPG and WebP show a "Quality" slider from 50 to 100 percent, starting at 90. "Transparent background (otherwise white)" appears for PNG and WebP; JPG is always painted white. Files are named like name-page-01.png, with the page number padded to at least two digits, or three for a document of 100 pages or more, so a folder sorts correctly. Each file keeps the format it was rendered in, even if you switch format afterwards.
• Set a target size per page for JPG and WebP. "Target size per page" offers "Off", "200 KB", "1 MB" and "5 MB" for JPG and WebP only. The tool first lowers the quality, down to 30 percent. If the page is still too big, it shrinks the picture by 20 percent at a time and tries again, and keeps the best result it reached. The page says: "Lowers quality, then size, until each page fits. Very large pages may stay above the target." The grid shows the pixel size that was actually saved. PNG has no target.
• Export only the pages you need. Leave "Pages (optional)" empty for every page, or type a list such as 1-3, 7, 12-. "12-" means page 12 to the end and "-3" means pages 1 to 3. Page numbers past the end are ignored, so 2-10 on a 3-page file gives pages 2 and 3. Pages render one at a time, and "Cancel" keeps the ones already done. Afterwards, use the tick on each thumbnail, or "Deselect all pages" and "Select all pages", to choose which pages go into the ZIP or the long image.
• Download pages one by one, as a ZIP, or as one long image. Each thumbnail has its own download button. With one page selected the main button reads like "Download page 2"; with more it reads "Download all (N) as ZIP". "One long image" joins the selected pages top to bottom, centred, in the chosen format. It is scaled down if it would pass 16,384 px on a side or 100 million pixels in total (16 million on a phone or tablet), and then says "The joined image was scaled to ...% to fit this device's size limit." Where the browser can share files, a "Share" button also appears.
• Drop several PDFs to convert them in a batch. Drop more than one PDF, or press "Add more files", and the page switches to a list with a button like "Convert 3 PDFs to PNG". The PDFs are done one at a time, each into its own ZIP named like report-images.zip. "Download all" puts each PDF in its own folder. The same format, DPI, quality, target size and page range apply to every PDF, and they are locked while the queue runs. A batch has no thumbnails and no long image.

Common problems and how to fix them

It says "Invalid page range. Use a format like 1-3, 7, 12- (this PDF has 3 pages)."

The "Pages (optional)" box only accepts numbers, dashes and commas. Semicolons, words, 0, or a backwards range such as 3-1 are refused. The same message appears when the range is well formed but none of its pages exist, for example 9 in a 3-page file. Correct the box and press the button again. In a batch the equivalent notice is "None of the pages in the range exist in this PDF" on the file's row.

It says "This PDF is password-protected. Remove the password and try again."

The PDF needs a password to open, and this tool cannot ask for one. The message appears when you press "Convert to images", not when you add the file. Under it, a "Send this file to another tool" box offers an "Unlock PDF" button that passes the same file to the unlock tool inside your browser. Unlock it there, then come back with the unlocked copy.

It says "This file is not a valid PDF or is corrupted."

The PDF reader could not parse the file when you pressed "Convert to images". A damaged or incomplete file, such as a download that was cut short, can fail this way. Download or export the PDF again. Any other failure during rendering shows "Could not render this PDF. It may be encrypted or corrupted." Pages already drawn before the failure stay in the grid.

It says "Some pages were rendered at 69% of the chosen resolution to fit this device's image size limit."

Browsers cap the size of the canvas a page is drawn on: 16,777,216 pixels on an iPhone or iPad, 64 million on Android, 250 million on a computer, and 16,384 px on any side. An A4 page at 600 DPI is about 35 million pixels, so on an iPhone it is drawn at 69 percent. The line "Each page: about ..." does not allow for this, and a batch applies the same scaling without a note. Lower the DPI to get the exact size.

It says "Could not join the pages into one image. Try fewer pages or a lower resolution."

"One long image" decodes every selected page and draws them all on one canvas, which takes a lot of memory for long documents or high DPI. It fails when the browser refuses that canvas or runs out of memory. Untick some pages, render again at a lower DPI, or use the ZIP instead. The long image is already shrunk to the device's limit when it can be, with the note about the percentage.

How it compares

This tool turns each page of a PDF into a PNG, JPG or WebP picture at 24 to 600 DPI, with page selection, a size target per page, a long-image join and batch conversion. The result is a picture of the page, so its text can no longer be selected or searched; after rendering, a hand-off to the OCR tool is offered for that. It renders pages rather than extracting the pictures stored inside the PDF, so you do not get an embedded photo at its original resolution. A desktop PDF app may offer cropping, colour options and extraction, which this tool does not. In exchange nothing needs installing, and the PDF is processed in your browser and not uploaded.