Many formats
Images, video, audio, PDF and text files such as JSON, CSV, PHP and Markdown.
Media & PDF Previewer
Preview images, video, audio, PDF and code files instantly, with file details.
- Free
- No sign-up
- Runs in your browser
- Developer
Drop files here or
Images (JPG, PNG, WebP, AVIF, GIF, SVG), video, audio, PDF, and text or code files. Up to 30 at once. Files never leave your device.
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Why use it
Before uploading media to WordPress, Shopify or a client handover folder, check what you actually have: the real pixel dimensions and aspect ratio of an image, the length of a video, whether a PDF opens, or what is inside a JSON or CSV export. Drop several files at once and switch between them; everything stays on your device.
File details
Dimensions, aspect ratio, duration, size and type for every file.
SHA-256 checksum
Confirm two people have exactly the same file.
How to use it
4 quick steps. Going deeper? Read Core Web Vitals for WordPress: fixing LCP, INP and CLS without guesswork.
- 01
Drop files onto the box or press Choose files (up to 30 at a time).
- 02
Select a file in the list to preview it: images and video show dimensions and aspect ratio, audio and video show duration.
- 03
PDFs open in your browser’s built-in viewer; JSON is pretty-printed, and other text files are shown as plain text.
- 04
Press Calculate checksum to get a SHA-256 hash you can compare with the file you send or receive.
Who it’s for
Typical situations where this tool saves time.
- Content editorsCheck image sizes and ratios before uploading to a CMS.
- DevelopersPeek inside JSON or CSV exports without opening an editor.
- Client handoversVerify delivered files with a checksum.
Questions
Short answers about privacy, limits and how the tool works.
Are my files uploaded?
No. The browser reads each file locally and creates a temporary preview link that disappears when you close the page.
Which formats can it preview?
Anything your browser can display: JPG, PNG, WebP, AVIF, GIF and SVG images, MP4 and WebM video, MP3, WAV and OGG audio, PDF, and text formats such as JSON, CSV, HTML, CSS, JS, PHP and Markdown.
What is the SHA-256 checksum for?
It is a fingerprint of the file. If two people calculate the same checksum, they have exactly the same file, which is useful for deliveries and downloads.
Need a tool like this inside your product?
I build custom calculators, admin utilities and integrations for WordPress, Laravel and Next.js teams.