Převod PDF na JPG

What PDF na JPG does

PDF na JPG turns PDF pages into separate image files. People need this to post a page on social media, add a page to a presentation, send it in a chat message, or share a document with someone who cannot open PDFs.

Each selected page is rendered with pdf.js at the resolution you choose, drawn on a white background and saved as JPG or PNG, one image per page. The PDF itself is not changed. Text in the images is part of the picture, so it can no longer be selected or searched.

Jak používat nástroj PDF na JPG

1. Přetáhněte soubory PDF do pole, nebo je vyberte kliknutím.
2. Zvolte výstupní formát a případná nastavení.
3. Klikněte na Převést. Převod proběhne ve vašem zařízení.
4. Stáhněte jednotlivé soubory, nebo všechny najednou jako ZIP.

When to use PDF na JPG

• Save the first page of a report as a JPG to use as a preview image on a website or in a newsletter.
• Turn each slide of a PDF presentation into a PNG so it can be posted on Instagram, LinkedIn or a blog.
• Convert a one-page flyer or restaurant menu to an image so it can be shared in WhatsApp or another chat app.
• Export a page of a signed form as an image for an online form that only accepts JPG or PNG uploads.

Settings explained

Output format

JPG gives small files and suits pages with photos. PNG is lossless and keeps text and thin lines perfectly sharp, but the files are larger. Choose PNG for text pages, diagrams and forms.

Resolution

Sets the pixel size of each image: 72, 150, 200 or 300 DPI. At 150 DPI, the default, an A4 page becomes about 1240 × 1754 pixels. Use 300 DPI for printing or for zooming into small text.

Quality

Only shown for JPG. It ranges from 10 to 100 percent, with 90 as the default. Values from 80 to 90 keep text clean; lower values give smaller files but visible blur around letters.

Pages (empty = all)

Leave it empty to convert every page. Otherwise type page numbers and ranges separated by commas, such as 1-3, 5, 8-. A range like 8- runs to the last page, and -3 means pages 1 to 3.

What changes when you convert PDF to JPG

Each PDF page becomes one image. Text in the image can no longer be selected or searched, so keep the PDF if you need that.

Format comparison

Co je PDF?

PDF (Portable Document Format) je formát dokumentů z roku 1993, jehož autorem je Adobe. Soubory mají příponu .pdf.

PDF was created by Adobe to show documents the same way on any device and printer. A PDF file describes pages with text, fonts, vector graphics and images at fixed positions. It became an open ISO standard in 2008, and there are special variants such as PDF/A for archiving and PDF/X for printing.

PDF is the right choice for documents that must look the same everywhere, such as contracts, invoices, forms, manuals, reports and files for printing. It also supports digital signatures, fillable forms, comments and password protection.

PDF is hard to edit, because text is stored as positioned pieces, not as flowing paragraphs. Converting a PDF to Word may change the layout. Scanned PDFs contain pictures of text, not real text, unless OCR has been applied.

All major web browsers open PDF files directly. Windows, macOS, iOS and most Android phones include a PDF viewer, and Adobe Acrobat Reader and many free apps can view, annotate and fill PDF forms on all platforms.

Co je JPG?

JPG (Joint Photographic Experts Group) je obrazový formát z roku 1992, jehož autorem je JPEG. Formát používá ztrátovou kompresi a nepodporuje průhlednost. Soubory mají příponu .jpg nebo .jpeg.

JPG, also written JPEG, is named after the Joint Photographic Experts Group, which wrote the standard. It splits an image into small blocks, transforms each block with a discrete cosine transform and discards the fine detail that the eye notices least. A quality setting controls how much detail is removed and therefore the file size.

JPG is the standard choice for photographs and other images with smooth color gradients, such as camera pictures, product photos and images for email or social media. It gives small files with good visual quality at moderate settings.

JPG does not support transparency or animation. Each time a JPG is edited and saved again, it loses a little more quality. Text, line art and sharp edges can show visible blocks or halos at low quality settings.

JPG is supported everywhere: in all web browsers, on all desktop and mobile operating systems, and on cameras, phones and printers. All image editors and office programs open it. It is the most compatible format for sharing photos.

Proč používat nástroj PDF na JPG od FansBond

Většina online převodníků nahrává vaše soubory na své servery. Nástroj „PDF na JPG“ od FansBond místo toho pracuje přímo ve vašem prohlížeči díky WebAssembly a moderním rozhraním prohlížeče. Soubory zůstávají ve vašem zařízení, což je bezpečnější pro soukromé fotky, smlouvy i nezveřejněnou práci, a často je to i rychlejší, protože se nic nemusí nahrávat ani stahovat.

Žádné fronty, žádné vodoznaky a žádný účet. Jakmile se stránka načte, nástroj funguje i na pomalém připojení.

Tips for the best result

• When you convert several pages, every image appears in the result list. Use Download all (ZIP) to save them in one archive instead of one by one.
• Choose PNG at 150 DPI or more for pages with small print. JPG compression can blur thin lines and small letters, especially at low quality values.
• A full page at 300 DPI often gives an image of several megabytes. Use 150 DPI for screens and messages, and keep 300 DPI for printing.
• Images are named after the PDF and the page number, for example report-3.jpg, so the order stays clear when you upload or sort them.

How PDF na JPG works in your browser

Pages are rendered with pdf.js, the PDF engine built into Firefox, running on your device. It reads fonts, vector graphics and embedded images and draws each page on a canvas.

For conversions and previews, the rendered pages are encoded as images in your browser. Text search, zoom and page navigation all work on the local copy of the file.

Privacy and security

Most online converters upload your files to a server, process them there and keep a copy for some time. PDF na JPG works differently: the code is downloaded to your browser once, and your files are read and written only on your device.

You can check this yourself: after the page has loaded, turn off your internet connection and the tool still works. This makes it safe for contracts, IDs, medical records, private photos and unreleased work.