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Yes. SingleFileZ’s self-extracting file feature is now part of SingleFile, which its official website describes as free and open source. The official project sources reviewed disclose no SingleFileZ subscription or paid upgrade for that feature. SingleFileZ’s repository says it has been completely merged into SingleFile.
What happened to SingleFileZ?
SingleFileZ was a browser extension for saving a web page as a self-extracting, ZIP-style HTML file. Its repository now directs users to SingleFile’s options, where they can select the file format for saving self-extracting files. It also says existing SingleFileZ settings can be imported.
SingleFile’s saved page can contain resources such as images, fonts, stylesheets, and frames in one HTML file that is also a valid ZIP archive. That lets the self-extracting format combine a page copy with an archive of its resources.
Does the self-extracting feature cost anything?
The official SingleFile website says the project is free and open source, and lists self-extracting ZIP files among its features. The official sources reviewed do not identify a paid tier for using this capability. You do not need to buy a SingleFileZ upgrade to save a page in that format through SingleFile.
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SingleFile also supports optional destinations such as Google Drive, Amazon S3, GitHub, and WebDAV. These integrations are not described as paid SingleFileZ features. Their availability does not establish that storage itself is free: each service may have its own pricing, limits, and terms.
What to know before opening a saved file
JavaScript and browser compatibility
Opening a self-extracting page requires JavaScript. The format comparison in SingleFile’s repository distinguishes it from ordinary SingleFile HTML, which can be viewed without running JavaScript. Self-extracting files can be unzipped to recover their resources, but their extra browser-opening requirements are worth considering when sharing or archiving them.
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Local-file restrictions vary by browser. The SingleFileZ FAQ notes that Chrome may require a command-line switch or the extension to open local self-extracting files; Firefox and Safari have their own local-file restrictions. If a saved file does not display, try opening it in a supported browser with JavaScript enabled and consult the project’s guidance for that browser.
Saving speed and completeness
The SingleFileZ FAQ says processing happens in the browser and that the extension does not upload saved data to third-party servers itself. Saving can still download page resources that were not displayed or cached when you first viewed the page.
Default settings are tuned to reduce output size, which can slow saving. The FAQ says turning off some cleanup options may improve speed; disabling frame or deferred-image handling, however, may leave resources out of the saved copy. If a page is incomplete, review those settings before trading completeness for a faster save.
SingleFile versus the self-extracting format
| Format | Compression and recovery | Opening requirements |
|---|---|---|
| Ordinary SingleFile HTML | Not described as compressed or extractable in the repository’s format comparison. | Can be viewed without running JavaScript. |
| Self-extracting HTML | Compressed; can be unzipped to extract resources. | Requires JavaScript and has additional browser-opening caveats, including for local files in Chromium. |
These distinctions come from the official format comparison. Choose the self-extracting format when compression and access to archived resources matter; choose ordinary HTML when straightforward opening without JavaScript is more important.
ScreenshotNeo is a separate alternative for screenshot capture
SingleFile saves page copies; ScreenshotNeo is a website screenshot API and MCP server for developers. It is an alternative to consider when you need an image or PDF capture rather than an archived page file. Its API can return PNG, JPEG, WebP, or PDF, and its features include full-page capture and removing consent banners, newsletter popups, and chat widgets before capture. Learn more at ScreenshotNeo.
Or skip the browser setup
Make a screenshot with one GET request (see the ScreenshotNeo API documentation):
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1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemscurl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpCookie banners, popups, and chat widgets are removed before the shot. Bot checks, blank pages, and failed loads are never billed. An MCP server lets AI agents take screenshots. The free plan includes 1,000 screenshots a month with no card; paid plans start at $5 for 3,000. Sign up for free.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Frequently Asked Questions
Is SingleFileZ still a separate extension?
Its repository says SingleFileZ has been completely merged into SingleFile and points users to SingleFile’s self-extracting file-format option.
Does SingleFile upload saved pages to its own servers?
The SingleFileZ FAQ says processing is done in the browser and saved data is not uploaded to third-party servers by the extension itself. Optional cloud destinations are separate services.
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