Free Online Tools

Change Any Cover Instantly

Three powerful tools to change covers for videos, PDFs, and EPUBs — all in your browser. No sign-up, no uploads, completely free.

100% in-browser No file uploads No sign-up needed

OUR TOOLS

Choose Your Cover Changer

Three specialized tools for different file types. Pick the one you need — each works entirely in your browser.

VIDEO

Video Cover Changer

Change video thumbnails and covers instantly. Supports MP4, AVI, MKV, MOV, WebM, WMV and more. No re-encoding, preserves original quality.

video.coverchanger.com
PDF

PDF Cover Changer

Change the cover page of your PDF documents. Replace the first page with any image. Perfect for reports, ebooks, and presentations.

pdf.coverchanger.com
EPUB

EPUB Cover Changer

Change the cover image of your EPUB ebooks. Update book covers for better presentation on e-readers, tablets, and online stores.

epub.coverchanger.com

WHY CHOOSE US

Why Cover Changer Is Different

All our tools share the same principles — privacy, speed, and simplicity.

100% Client-Side Processing

Your files never leave your device. All Cover Changer tools process files locally in your browser — no server uploads, complete privacy.

No Sign-Up, No Watermark, No Ads

All tools are completely free with no registration, no watermarks on output, and no distracting advertisements. Just clean, fast tools that work.

Works on Every Device

Whether you're on iPhone, Android, Windows, Mac, or Linux, all tools work the same way. No app installation, no plugins — just your browser.

Preserves Original Quality

When you change a cover, the original content remains intact. Videos use stream copy mode, PDFs keep all pages, and EPUBs maintain their structure.

Multiple Format Support

Video: MP4, AVI, MKV, MOV, WebM, WMV and more. PDF: standard PDF documents. EPUB: EPUB 2 and 3 ebooks. Covers: PNG, JPG, WebP and more.

Smart Device Adaptation

Each tool automatically detects your device's memory and adjusts file size limits accordingly — ensuring smooth performance on any device.

FAQ

Frequently Asked Questions

What is Cover Changer?
Cover Changer is a suite of free online tools that let you change covers for videos, PDFs, and EPUB files — all in your browser. No sign-up, no file uploads, completely private. Each tool is specialized for a specific file type.
Are my files uploaded anywhere?
No. All Cover Changer tools process files entirely in your browser using client-side technology. Your videos, PDFs, EPUBs, and images never leave your device — complete privacy by design.
Is Cover Changer really free?
Yes, all Cover Changer tools are completely free. No sign-up required, no watermarks on your files, no hidden fees, no ads. Just open the tool you need and start changing covers.
What tools does Cover Changer offer?
Cover Changer offers three specialized tools: Video Cover Changer (video.coverchanger.com) for changing video thumbnails and covers, PDF Cover Changer (pdf.coverchanger.com) for changing PDF cover pages, and EPUB Cover Changer (epub.coverchanger.com) for changing ebook covers.
Do I need to install anything?
No installation needed. All Cover Changer tools work directly in your web browser — just open the website, upload your file, change the cover, and download the result.
What devices and browsers are supported?
Cover Changer works on all devices with a modern web browser — iPhone, iPad, Android phones and tablets, Windows PC, Mac, and Linux. Supported browsers include Chrome, Safari, Firefox, Edge, and Opera.
Will changing the cover affect my file quality?
No. Each tool is designed to preserve the original content quality. Cover Changer uses stream copy mode to avoid re-encoding, PDF Cover Changer keeps all pages intact, and EPUB Cover Changer maintains the ebook structure.
How do I change a video cover?
Visit video.coverchanger.com, drag and drop your video file and new cover image, click the change button, and download the result. Works on all devices.
How do I change a PDF cover?
Visit pdf.coverchanger.com, upload your PDF and new cover image, and the tool will replace the first page with your new cover. Download the updated PDF instantly.
How do I change an EPUB cover?
Visit epub.coverchanger.com, upload your EPUB file and new cover image, and the tool will update the ebook cover. Download the updated EPUB instantly.

Ready to Change Your Covers?

Choose a tool above and start changing covers — free, private, no sign-up needed.

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