Reference
PDF to JPG: frequently asked questions
PDFtoJPG.ca converts PDF pages into JPG or PNG images inside your browser, and turns images back into a PDF. Nothing is uploaded, nothing is stored, and there is no account or watermark. These are the questions visitors ask most, answered plainly and in one place — including the ones this tool cannot do.
Last updated: October 2026
Convert a PDF to JPG nowKey facts about this converter
- PDFtoJPG.ca converts PDF pages into JPG or PNG images in the browser, and turns JPG, PNG and WebP images into a single PDF; no file is ever uploaded to a server.
- Rendering is done with Mozilla PDF.js, the same open-source engine Firefox uses to display a PDF on screen.
- Three resolution presets are offered, 72, 150 and 300 DPI, and advanced settings allow any value from 36 to 600 DPI.
- An A4 page renders to 595 × 842 pixels at 72 DPI, 1,240 × 1,754 pixels at 150 DPI and 2,480 × 3,508 pixels at 300 DPI.
- JPEG compression is set with a slider whose presets are roughly 70%, 85% and 95% quality; PNG output is lossless and has no compression setting.
- Browsers cap how large a single canvas may be, at about 24 megapixels, so a render that would pass that limit is reduced and the converter reports when it happens.
- Every page of a document is selected as soon as the file is read, and a typed range such as 1, 3, 5-8 narrows the job; a page number the document does not have is reported rather than skipped.
- Multi-page jobs download as a ZIP that keeps one folder per document, with images named document-name-page-01.jpg and the page number zero-padded to the width of the page count.
- The JPG to PDF tool places one image per page on A4, Letter or a page that fits the image, with margins of none, about 8.5 mm or about 20 mm, and it never crops or stretches an image.
- Password-protected PDFs are unlocked with their opening password inside the browser; the password is never transmitted, stored or logged.
- There is no account, no signup, no watermark and no fixed page count limit; the practical ceiling is the memory of the device doing the work.
The basics
What does a PDF to JPG converter actually do?
It draws each page of the PDF at the resolution you choose and saves the result as a JPEG image. Here that happens in your browser: the rendering engine draws the page onto a canvas, and the canvas is encoded into a JPG. The PDF itself is never modified — your original stays as it is, and the images are copies of its pages.
Is JPG the same as JPEG?
Yes. JPG and JPEG are two names for the same image format; the extension was shortened to three characters on early Windows systems, and both spellings are still used. A file called scan.jpg and one called scan.jpeg are the same kind of image, and every tool here treats them identically.
Do I need to install anything or create an account?
No. The converter is an ordinary web page, so it runs in the browser you already have on Windows, macOS, Linux, Android, iPadOS and iOS. There is no app, extension or plugin to install, no account, no email address, no watermark and no subscription.
How many pages can I convert at once?
There is no fixed page limit. Every page of a document is selected as soon as it is read, and you can narrow the job to a single page, the first page only, or a typed range such as 1, 3, 5-8. The real ceiling is your device memory rather than a rule, because pages are rendered one at a time and released as the job proceeds.
Quality and file size
What DPI should I choose?
Standard (150 DPI) is the default and matches how a page looks on screen. Smaller file (72 DPI) suits email and chat, while High quality (300 DPI) is for printing, archiving or text recognition. Advanced settings allow a custom value from 36 to 600 DPI, but rendering above the resolution of the source adds pixels rather than detail.
Is JPG lossy, and does that matter?
Yes. JPG discards fine detail to keep files small, and the page is flattened at the same time, so its text stops being selectable. At 85% compression the difference is invisible on screen; at 70% small print starts to soften. When every pixel matters, the PDF to PNG tool produces lossless images instead, at the cost of much larger files.
Why is a converted page larger than the PDF it came from?
Because an A4 page rendered at 300 DPI is about 8.7 megapixels, and pixels take space. A PDF describes a page with instructions that compress extremely well, while an image stores every pixel. Dropping to 150 DPI, or lowering the compression quality, brings the size down sharply.
Why did a page come out at a lower resolution than I asked for?
Browsers cap how large a single canvas may be. A page whose render would pass that limit is drawn at a reduced resolution, and the converter tells you when it happens instead of failing quietly. Converting the document at 150 DPI, or in smaller page ranges, avoids the cap entirely.
Privacy and security
Is my PDF uploaded anywhere?
No. Your browser reads the file from your disk, renders each page locally, and encodes the images on your device. No request carries your document to a server, there is no temporary copy on our side, and nothing is stored — which is why there is nothing to delete afterwards.
How can I check that myself?
Two ways. Open your browser developer tools with F12, watch the Network tab while you convert, and note that the only requests are for the page and its assets — your document is not among them. Or add a PDF, wait for the page previews, disconnect from the internet and press Convert: it still works, because the rendering engine is already loaded.
Can I convert a password-protected PDF?
Yes. An encrypted document is listed with a password field, and the password you type unlocks it for rendering inside your browser. It is never sent anywhere or stored, and it is dropped when you close the tab or start over. Without the correct password the page cannot be opened, and the converter never attempts to bypass that protection.
Devices, browsers and formats
Which browsers does the converter work in?
Any current one: Chrome, Edge, Firefox, Safari, Brave, Chromium and Samsung Internet all support the file and canvas features it relies on. Firefox is a particularly natural fit, since the engine doing the work is Mozilla PDF.js — the same code Firefox uses to display a PDF on screen.
What can I convert, and in which direction?
PDF pages become JPG or PNG images, one image per page, and a whole document can be downloaded as a ZIP. In the other direction, JPG, PNG and WebP images can be combined into a single PDF with A4, Letter or fit-to-image pages. Nothing else is converted, and no file leaves your device in any of those directions.
Does it work on a phone, a tablet or a Chromebook?
Yes, with nothing to install on any of them. The workflow is the same everywhere: add the file, choose the pages, pick a resolution, convert, then download the images individually or as one ZIP. Guides for iPhone, Android, Mac, Windows, Chromebook and Linux explain where the finished files land on each platform.
When something goes wrong
"This doesn't appear to be a valid PDF" — what went wrong?
The file is not a PDF, or its download was interrupted and it is incomplete. Renaming a .jpg or .docx file to .pdf does not make it a PDF: the converter checks the file's internal signature rather than its name. Opening it in a PDF reader first is the quickest way to confirm the document itself is sound.
A page will not convert. What should I try?
Lower the resolution for that page. An unusually large page size at a high DPI can exceed the canvas area a browser allows, so 150 DPI is the safe choice; converting the remaining pages as a separate, smaller range usually works. A page that fails is reported with its number, so you always know which one.
The converted images look blurry. Why?
Blurriness almost always comes from the source. A scanned PDF stores a photograph of each page, so the conversion can never be sharper than the scan itself: a low-resolution or heavily compressed scan stays soft whatever settings are used. Rendering at 300 DPI with high compression quality gets the best from the file you have.
Where do the downloaded files go?
Wherever your browser saves downloads, usually the Downloads folder. Chrome and Firefox both keep a downloads list you can reopen, with Ctrl+J in Chrome. A ZIP from a multi-page job unpacks into images named after the document and numbered in page order, so a long document stays in sequence.
Related free tools and guides
Last reviewed on 27 October 2026 · PDFtoJPG.ca processes every file locally in your browser.