What each tool does with your file

23 of 24 never send your file anywhere

Your photo, PDF, text or recording is read from your own disk or camera and handled in the page. It is never put into a network request. The one exception is Countdown, and only for a countdown you choose to publish, because a shared link needs somewhere to live.

What does leave is small, and never your file

When you finish using a tool, one anonymous message tells our counter which tool was used. Google Analytics records the page view and the options you picked from the page’s own lists. Neither is ever sent a file name, a size, a count or anything you typed. The full list, fonts included, is in the table below.

Some tools download a helper once

7 tools fetch a larger engine the first time you need it, such as the AI model in the background remover. It comes from this site, not a third party, and it runs on your device. Each card below says what and how big.

Reduce Any File Size

Your file: Read and compressed on this device. Never uploaded.

Downloads once: Nothing beyond the page itself

Works offline: Yes, once the page has loaded (checked by our offline test)

Analytics is told: the output format you picked; the size limit you picked from the list ("custom" if you typed your own); whether every file fitted under the limit.

Passport Size Photo Maker

Your file: Your photo is cropped and resized on this device. Never uploaded.

Downloads once: A 26 MB background helper, only if you tick the white background

Works offline: Yes, once the page has loaded

Analytics is told: which photo size you picked; whether you ticked the white background; how many copies you picked for the print sheet; whether the photo fitted the size limit.

PDF to Image

Your file: Your PDF is rendered on this device. Never uploaded.

Downloads once: Nothing beyond the page itself

Works offline: Yes, once the page has loaded (checked by our offline test)

Analytics is told: PNG or JPG, whichever you picked; the quality you picked.

Background Remover

Your file: The AI model runs on this device. Your picture is never uploaded.

Downloads once: The AI model: about 4 MB for objects, 26 MB for people, plus an 11 MB runtime

Works offline: Yes, once you have done one cutout (checked by our offline test)

Analytics is told: which model you picked (objects or people); which backdrop you picked; the output format you downloaded; whether this device had to download the model first.

Images to PDF

Your file: Your pictures are made into a PDF on this device. Never uploaded.

Downloads once: A 1.5 MB HEIC decoder, only when you add an iPhone HEIC photo

Works offline: Yes, once the page has loaded; the first HEIC photo needs a connection (checked by our offline test)

Analytics is told: the page size you picked; the quality you picked; whether you combined the images into one PDF; whether you set a size limit; whether any image could not be read.

Merge PDF

Your file: Your PDFs are joined on this device. Never uploaded.

Downloads once: Nothing beyond the page itself

Works offline: Yes, once the page has loaded (checked by our offline test)

Analytics is told: which view you used to order the files; whether you asked for blank separator pages.

Split PDF

Your file: Your PDF is split on this device. Never uploaded.

Downloads once: Nothing beyond the page itself

Works offline: Yes, once the page has loaded (checked by our offline test)

Analytics is told: which way you chose to split; whether you wanted the pages back as one file.

Organize PDF Pages

Your file: Your PDF is rearranged on this device. Never uploaded.

Downloads once: Nothing beyond the page itself

Works offline: Yes, once the page has loaded (checked by our offline test)

Analytics is told: whether you rotated any page; whether you extracted a selection.

Image Format Changer

Your file: Your images are converted on this device. Never uploaded.

Downloads once: A 1.5 MB HEIC decoder, only when you add an iPhone HEIC photo

Works offline: Yes, once the page has loaded; the first HEIC needs a connection (checked by our offline test)

Analytics is told: the format you converted to; the quality you picked; whether any image could not be converted.

Character & Word Counter

Your file: Your text is counted on this device. Never uploaded.

Downloads once: Nothing beyond the page itself

Works offline: Yes, once the page has loaded (checked by our offline test)

Analytics is told: only that the tool was used.

Image to Text

Your file: Your picture is read on this device. Never uploaded.

Downloads once: The text reader and its English model, about 4 MB

Works offline: Yes, after your first read

Analytics is told: which layout you picked.

Webcam Test

Your file: The camera picture stays in this tab. Nothing is recorded or uploaded.

Also asks www.cloudflare.com: which country you are in, so the product prices further down show in your currency. Nothing about your device test is in it.

Also asks api.frankfurter.dev: the day’s exchange rates, for the same prices. Nothing about your device test is in it.

Downloads once: Nothing beyond the page itself

Works offline: Yes, once the page has loaded

Analytics is told: the picture quality you asked for; the result's short code, such as ok or in-use; which extra you used, such as the snapshot; where you stopped, if you cancelled.

Microphone Test

Your file: The short recording stays in this tab's memory. Never uploaded.

Also asks www.cloudflare.com: which country you are in, so the product prices further down show in your currency. Nothing about your device test is in it.

Also asks api.frankfurter.dev: the day’s exchange rates, for the same prices. Nothing about your device test is in it.

Downloads once: Nothing beyond the page itself

Works offline: Yes, once the page has loaded (checked by our offline test)

Analytics is told: whether noise processing was on; the result's short code, such as ok or too-quiet; what kind of device it was, as one of five words like bt-headset; which extra you used, such as playback; which buying guide was suggested; whether the guide you opened matched your result; where you stopped, if you cancelled.

Speaker & Headphone Test

Your file: The test sounds are made in this tab. Nothing you hear or answer is uploaded.

Also asks www.cloudflare.com: which country you are in, so the product prices further down show in your currency. Nothing about your device test is in it.

Also asks api.frankfurter.dev: the day’s exchange rates, for the same prices. Nothing about your device test is in it.

Downloads once: Nothing beyond the page itself

Works offline: Yes, once the page has loaded (checked by our offline test)

Analytics is told: what you said you were testing, such as speakers or headphones; which test sound you picked; the result's short code, such as ok or swapped; where you stopped, if you cancelled; which tab you opened; which extra check you ran.

Timestamp Converter

Your file: Your times are converted on this device. Never uploaded.

Downloads once: Nothing beyond the page itself

Works offline: Yes, once the page has loaded (checked by our offline test)

Analytics is told: which way you converted; which unit you picked; whether the time zone you chose was your own, as a yes or no.

Unit Converter

Your file: Your numbers are converted on this device. Never uploaded.

Downloads once: Nothing beyond the page itself

Works offline: Yes, once the page has loaded (checked by our offline test)

Analytics is told: which kind of measurement you picked; the unit you converted from; the unit you converted to; whether you arrived from a shared link.

Countdown

Your file: A private countdown stays in this browser. A countdown you choose to publish is stored on our server, so its link works, and deleted 90 days after it ends.

Stored on our server: Only when you publish: the title, end time, time zone, theme, picture and reveal, so the shared page can exist. The reveal is withheld until the end time.

Downloads once: Nothing beyond the page itself

Works offline: Yes, for private countdowns

Analytics is told: which kind of countdown you made; which theme you picked; whether it has a sealed reveal; who you chose can see it; the reminder time you picked from the list.

A/B Test Calculator

Your file: Your numbers are worked out on this device. Never uploaded.

Downloads once: Nothing beyond the page itself

Works offline: Yes, once the page has loaded (checked by our offline test)

Analytics is told: which of the two modes you used; the confidence level you picked; which of the four verdicts came out.

Delete My Account

Your file: What you type stays on this device. The list of services is downloaded from this site.

Downloads once: Nothing beyond the page itself

Works offline: Yes, after the first visit

Analytics is told: which kind of request you picked (delete, copy or stop); whether you found the service by searching or from the list.

QR Code Scanner

Your file: The camera picture and the code's contents stay on this device. A link opens only if you press Open.

Downloads once: Nothing beyond the page itself

Works offline: Yes, once the page has loaded (checked by our offline test)

Analytics is told: the type of code (a link, a UPI payment, Wi-Fi…), or which kind of action; the type of code you copied or saved; whether the code raised a warning; whether you used the camera or a picture; how many codes were in view; which reading engine ran; whether it was dark; whether the torch was on; whether the phone has a torch the page can use; which UPI app you chose to open; the kind of device, when you install the scanner as an app; how the install was offered; which button you pressed to install; whether you accepted the install.

Home Loan EMI Calculator

Your file: Your loan figures are worked out on this device. Never uploaded.

Downloads once: Nothing beyond the page itself

Works offline: Yes, once the page has loaded (checked by our offline test)

Analytics is told: which country you picked; whether you tried a prepayment.

Document Scanner

Your file: Your photos are turned into a PDF on this device. Never uploaded.

Downloads once: The text reader, about 4 MB, with your first scan

Works offline: Yes, after your first scan

Analytics is told: whether you used the camera or picked files; which look you picked; the page size you picked; the quality you picked; whether the text could be read; whether you adjusted any crop; whether the crop adjuster opened by itself; the kind of device, when you install the scanner as an app; how the install was offered; which button you pressed to install; whether you accepted the install.

URL Parser & Decoder

Your file: Your link is taken apart on this device. Never uploaded.

Downloads once: Nothing beyond the page itself

Works offline: Yes, once the page has loaded (checked by our offline test)

Analytics is told: whether you read one link or compared two; whether any tracking parameters were found, as a yes or no; whether there was a link inside the link, as a yes or no.

QR Code Generator

Your file: What you type and your logo are made into a code on this device. Never uploaded or saved.

Downloads once: The QR scanner's reading engine, the first time a code with a logo or custom colours is test-scanned

Works offline: Yes, once the page has loaded (checked by our offline test)

Analytics is told: which kind of code you picked from the list (a link, Wi-Fi, UPI…); whether you chose PNG or SVG; which size you picked from the list; which error-correction setting you picked; whether you added a logo, as a yes or no; whether you changed the colours, as a yes or no; whether the on-device scan check passed, failed or was not needed.