Extract Emails from Text
Find email-like tokens with a practical regex and deduplicate results line by line.
How it works
- 1Paste or type your text in the input field
- 2Click "Extract" — processing happens in your browser
- 3Copy the result or download as a text file
What to do next
About Extract Email Addresses
Extract Email Addresses performs extract email addresses as a focused single-page utility. Find email-like tokens with a practical regex and deduplicate results line by line. Defaults are tuned for the common case so the first run is one click, with every option that matters exposed for the moments you need to fine-tune the result.
Extract Email Addresses is shaped for the gap between "I'll do it by hand" and "I'll script it." When the job is small enough that automating it would take longer than doing it, but annoying enough to want a focused tool — that is the situation this page is built for.
Extract Email Addresses runs the entire transformation inside your browser. The file is read by JavaScript running in the page, processed in-memory by standard browser APIs, and written back as a download. The browser is the runtime; the page is the interface. You can confirm what the tool does by opening the developer-tools Network tab during a run — the only requests are for the page's own static assets.
From a technical standpoint, Extract Email Addresses is JavaScript and standard browser APIs running in your tab. The browser is the runtime; the page is the interface. Maximum input size: 0 MB per run.
A practical note on limits: Extract Email Addresses accepts inputs up to 0 MB per run, and the tool processes one input at a time to keep memory usage predictable. If you ever bump into the ceiling, the cause is the size of the input.
Anyone who works with text processing on a casual basis — writers cleaning copy before publishing, support agents standardising replies, developers prepping fixture data — finds Extract Email Addresses a quick way to get the result. The page loads in under a second, the controls are visible from a single screen, and the result downloads or copies in one click.
The output handed back by Extract Email Addresses is the output file. If you would prefer to keep the result in the browser instead of downloading it, you can copy it from the result panel and paste it directly into another tab — useful when the next tool in your workflow expects pasted text rather than a file.
For multi-step jobs, Extract Email Addresses sits next to Extract URLs, Extract Phone Numbers, and Extract Numbers. None of them depend on each other — you can use Extract Email Addresses on its own — but together they cover the common variations of the task this page exists to handle.
Some notes on the design of Extract Email Addresses. The page is intentionally narrow: one input, the controls relevant to the task, and one output. Adding unrelated features would make the common case slower for the majority of users, so the surface is held to what people actually use.
Some background on the design choices behind Extract Email Addresses: every option you see on the page is there because a real workflow needs it, and every option that is not shown has been deliberately omitted to keep the common case fast. The bias is toward minimal-but-complete.
If you also use a command-line tool for extract email addresses, Extract Email Addresses is a convenient alternative for the times you are on a different machine or helping someone who is not comfortable in a terminal. The output is a standard file in the format documented above.
If you want to get the most out of Extract Email Addresses, three small habits help. Drag-and-drop is faster than the file picker once you get used to it. The keyboard shortcut for downloading the result is whatever your browser uses for "save link as," because the result is a normal download. And if you are working on a sensitive file, processing in an Incognito or Private window is a good extra layer — it leaves no trace in browser history when the tab closes.
If Extract Email Addresses appears to hang, the engine is almost certainly still working — large inputs simply take longer to process inside a browser than they would on a server with multi-core scheduling. For inputs near the 0 MB cap, give it up to a minute on a typical laptop before assuming something is stuck.
Open the workspace above to start using Extract Email Addresses. The engine loads on the first interaction so the page itself stays light, and once the tool is warm it processes subsequent jobs quickly. The moment the page is interactive, the tool is ready to do real work on your file.
How it works
- 1Open the Extract Email Addresses workspace above. The interface is a single page, so there is nothing to navigate.
- 2Drop a text file onto the upload area, or click to pick one from your device.
- 3Tweak the controls if the defaults are not quite right for your input. The options are kept short and labelled in plain language.
- 4Hit the run button. standard browser APIs does the work in your browser tab.
- 5Download the result. The file is generated in your browser and saved through your normal download flow.
- 6Repeat the process for additional inputs whenever you need to. The page stays loaded, so subsequent runs are quick.
Common use cases
- Find and replace dozens of variants of a phrase in one pass using Extract Email Addresses.
- Diff two drafts of a document side by side.
- Convert a column of names into a comma-separated list for a script.
- Sort a list of items alphabetically before publishing it.
- Strip messy formatting out of copy pasted from a PDF.
- Re-case a title from ALL CAPS to Title Case.
- Count the words in a draft to check it fits a brief.
- De-duplicate a list of email addresses pulled from a form export.
FAQ
100% accurate?
Regex heuristics miss rare valid addresses and may false-positive on odd tokens.
Quoted names?
Display names outside angle brackets are ignored; only addr-spec patterns match.
IDN domains?
Unicode domains may appear if pasted in UTF-8 form; ASCII-only TLDs are assumed in the pattern.
Private?
Yes — local extraction only.
Huge pastes?
Performance depends on your browser; chunk very large logs if needed.
Obfuscation?
Addresses like user [at] domain are not recovered automatically.
How do I know I am using the latest version of Extract Email Addresses?
Extract Email Addresses is updated whenever the underlying engine releases an improvement or a bug fix. Because the tool is delivered as a static page, every visit fetches the latest version automatically — there is no "version" to manage on your end. If a particular release ever changes default behaviour, the change is documented on Favtoo's changelog so you can confirm what shifted.
What permissions does Extract Email Addresses need to function?
Extract Email Addresses only needs the standard web platform — file picker access for the inputs you choose to load, and optionally clipboard access if you copy the result rather than downloading it. There is no microphone, camera, geolocation or background-permission request, because none of those are needed for the work the tool does.
How fast is Extract Email Addresses?
Most jobs finish in seconds. Speed scales with input size and with how many CPU cycles your browser tab has available — the engine runs in your browser, so it shares resources with whatever else you have open. For inputs near the 0 MB ceiling, expect anywhere from a few seconds to roughly a minute on a typical laptop. Closing other heavy tabs noticeably speeds things up.
Why use Extract Email Addresses instead of a paid online tool?
Desktop apps usually have more advanced features but require installation, maintenance and (often) a licence. Paid online tools are convenient but route your file through their servers and gate downloads behind accounts. Extract Email Addresses sits in between: free, instant, and private, but intentionally narrow in scope. For one-off jobs and the common text processing operations, it is usually the lowest-friction choice; for highly specialised work, a dedicated app is still the right answer.
Is Extract Email Addresses mobile-friendly?
Extract Email Addresses runs in any modern mobile browser — Safari, Chrome, Firefox and the in-app browsers in most messaging apps all support the underlying APIs. Performance depends on the device: a recent phone handles typical inputs nearly as fast as a laptop, while older devices may take a few seconds longer near the 0 MB ceiling. The interface lays out cleanly on small screens, so you do not need to pinch-zoom to see the controls.
Can I trust the output of Extract Email Addresses for important work?
Extract Email Addresses is built on standard browser APIs, which is the same class of engine used by professional text processing pipelines. For deterministic operations, the output is byte-identical to what an equivalent CLI run would produce; for operations involving a codec or a model, the result is well within the range of what comparable tools generate. If you have a specific reference output you need to match, run a small test job first to confirm the configuration produces what you expect.
Does Extract Email Addresses upload my file to a server?
Your file is processed inside your browser by standard browser APIs. The engine reads the file's bytes from your tab's memory, computes the result, and writes the result back into the tab. You can confirm what the page does by opening developer tools and watching the Network tab during a run — the requests you see are for the tool's static assets only.
Can I use Extract Email Addresses with formats other than the defaults?
The accepted formats are listed in the upload area on the tool itself. If your input is in a format that is not directly supported, convert it first using one of Favtoo's converter tools — every Favtoo converter outputs a file that is a clean input to the next tool in the chain.