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Create ZIP File Online

Put selected local files into one downloadable ZIP archive without uploading them.

Privacy: your files never leave your device. All processing happens locally in your browser.

How to use

  1. 1.Choose one through twenty local files whose combined size is no more than 20 MB.
  2. 2.Enter a descriptive archive filename; unsafe path characters are normalized for the download.
  3. 3.Create the ZIP, download it, and open it once to confirm the expected entry list.

About Create ZIP File Online

Create ZIP File Online combines a small selection of local files into one ordinary ZIP archive without sending the files to a conversion server. Choose up to twenty files, enter the archive name you want, and select Create ZIP. The browser keeps the selected file bytes in the current tab, places them into a new archive, and provides one download. This is useful when sharing a few related documents, collecting small design assets, preparing a simple attachment bundle, or reducing the number of files a recipient must download separately. The page does not need an account and does not inspect the contents of your files beyond their browser-provided names and sizes.

The limits are deliberate. A maximum of twenty input files and twenty megabytes total keeps the operation predictable for a browser-only tool and avoids presenting a large upload-like task as if it were a reliable archival service. If no file is selected, too many files are selected, or the combined size is too large, the tool stops with a direct explanation. A ZIP can compress some kinds of text or uncompressed media, but already-compressed formats such as JPEG, PNG, MP4, PDF, or another ZIP may get little smaller or even become slightly larger. The result is a container convenience, not a guaranteed size reducer.

File names are treated defensively before they become ZIP entry names. Browser file inputs normally provide a leaf filename, but the tool removes path segments, leading dots, control characters, and unsafe empty names instead of allowing an archive entry to imply a destination outside an extraction folder. If two normalized names collide, the tool adds a numeric suffix so entries remain distinct. The original file bytes are copied into the archive; the page does not resize an image, transcode media, parse a document, scan for malware, repair a damaged file, or infer a MIME type. Keep the original files because a ZIP is not a backup strategy and an interrupted download cannot be recovered by this page.

JSZip is loaded only after you choose to create an archive, keeping it out of the initial tool-page bundle. The ZIP Blob and download URL are made locally in the browser. The URL is replaced when a new archive is created, so an old result is not presented as a new one. Browser download settings decide where the archive is saved, and the site cannot write into an arbitrary local directory or overwrite a file without a normal download action. Review the archive name before sharing it, especially on systems where a similar filename could confuse recipients.

For a dependable handoff, choose only the files that belong together, check the displayed count and your local file sizes, use an archive name that describes the contents and date if needed, create the ZIP, then open the downloaded archive once and compare its entries with the source list. Do not use this page for password-protected archives, confidential key material, large backups, application installers, or a workflow that requires checksums, retention, encryption, or a formal chain of custody. Those needs require purpose-built tools and policies. This page provides a transparent local packaging step for a bounded set of files, not a replacement for encrypted storage, source control, or backup software.

Methodology & sources

Validate one through twenty browser-selected files and a 20 MB combined limit, normalize each ZIP entry to a safe leaf name with deterministic collision handling, dynamically load JSZip after interaction, copy original File bytes into a DEFLATE ZIP Blob, and expose one local download without a network upload.

Frequently asked questions

Are my files uploaded to the site?
No. The selected files are packaged locally in your browser and no upload request is made by this tool.
Will the ZIP always be smaller?
No. Files that are already compressed may not shrink and can become slightly larger in a ZIP container.
Can I password-protect the archive?
No. This focused local tool creates a standard unencrypted ZIP only.

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