Archive Image Preview
Browse the images inside a .zip with inline thumbnails, before extracting anything.
What is Archive Previews?
A preview browser for image-heavy archives: asset packs, design exports, screenshot bundles and photo backups.
How it works
The central directory is scanned for image extensions, each image is decompressed in memory and handed to the browser as an object URL, and the thumbnails are drawn from those URLs. Nothing is written to disk until you click a download link.
- Add your files. Drop files (or a whole folder) onto the drop zone. Browsers hand the contents straight to the page, so nothing is uploaded.
- Choose the options. Pick the format, compression, naming rule or split size. Any change re-computes the preview immediately.
- Download the result. Run the tool and grab the archive, the extracted files or the report. Multi-file results come back as a single .zip.
Examples
A 240 MB photo folder → a 52 MB .zip
JPEGs are already compressed, so the archive only saves 10–15% — but adding the folder structure and a manifest makes the upload verifiable.
A download cut off at 1.4 GB
The File Splitter cuts it into 500 MB chunks that fit the host's limit, and the File Joiner reassembles them, refusing any set with a missing part.
A release bundle with checksums
The Manifest Generator writes sha256sum-style lines next to the files, so the recipient can prove the download arrived intact.
Common mistakes
Expecting ZIP to shrink photos, video or audio
Those formats are already compressed; deflate typically saves single digits on them. ZIP is at its best on text, JSON, CSV, logs and source code.
Treating ZipCrypto as real encryption
Traditional ZIP encryption is legacy and breakable. It stops casual snooping only — for secrets, encrypt the contents with AES-256 first.
Renaming extensions to convert a file
Changing .png to .jpg does not change the bytes inside. Some programs will refuse the file, or display garbage. Use a real converter when the format must change.
Splitting without keeping the suffixes
The parts carry .001, .002 … suffixes on purpose: the joiner orders them by number and fails loudly when one is missing, instead of producing a corrupt file.
Frequently asked questions
Which image formats can be previewed?
Everything the browser itself can decode: PNG, JPEG, WebP, AVIF, GIF and BMP. SVG is listed and downloadable too. Rare formats such as CMYK TIFF are listed but will not render.
Why does a thumbnail sometimes fail to appear?
Either the entry is corrupt (the ZIP Integrity Checker will confirm it) or the browser has no decoder for that format. The file is still extracted correctly for download.
Can I preview a huge image archive?
Thumbnails are built in memory, so a few hundred images is comfortable and several thousand begins to strain a tab. Preview in batches for very large packs.