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Privacy-First Transcription: What Leaves Your Device

By TooLongToListen · Published October 21, 2026 · Updated

Three ways to transcribe

CriterionOn the deviceOwn serverThird-party API
Where the file goesNowhereTo the provider's serverTo the provider's server, then another company
Who processes itYour deviceThe providerThe provider and a vendor
SpeedDepends on your deviceServer speedServer speed
Quality on large filesLimited by hardwareHigher and consistentHigher and consistent
ExposureLowestMediumHigher, with more parties
Offline usePossibleNoNo

No model is right for everything. The honest question is what you can accept for each file.

What happens in TooLongToListen

StepWhere it runsWhat leaves the device
Choosing the fileYour browserNothing
Extracting the audio from a videoYour browserNothing
Uploading for transcriptionFrom browser to our serverThe audio only
TranscribingOur own serverNothing further
Showing the textYour browserNothing

The video stays on your device. The audio is processed on our own server. Details on retention and deletion are in the privacy policy, which is linked from the footer of the site.

Why extract the audio in the browser

A video of ten minutes can be hundreds of megabytes, while the speech fits in a few. Extracting the audio first means a faster upload, less mobile data, and no pictures leaving your device. For how this works technically, see video to text without uploading the video.

Questions to ask any service

  1. Where does my file go, and in which country?
  2. Which companies process it?
  3. How long is it kept?
  4. Is it used to train models?
  5. How do I delete it?
  6. Who inside the company can open it?
  7. Is there a data processing agreement for business use?

Special situations

SituationSuggestion
Medical, legal or children's dataCheck legal requirements before uploading anything
Confidential meetingsGet permission and limit access
Interviews with sourcesThink about source protection first
Public contentLower risk

This is general information, not legal advice. Regulations vary by country; if you handle personal data in the EU or Brazil, the GDPR or the LGPD may apply.

What we do not claim

We do not claim that nothing is ever stored, that the service is certified, or that it is the right choice for regulated data. Read the privacy policy for retention and deletion.

See the product

Try video to text, where the extraction step is shown on screen. The privacy policy is at privacy.

Sources

Frequently asked questions

Is my video uploaded when I transcribe it?

No. The video stays on your device. Your browser extracts the audio track, and only that audio is sent for transcription.

Where is the audio processed?

The audio is processed on our own server, not sent to third-party AI services for transcription. The privacy policy describes retention and your rights.

Is on-device transcription always more private?

Generally yes for the file, because nothing is sent. But it depends on the model and device, and results and speed vary. Server processing is a trade-off between quality and exposure.

What should I ask any transcription service?

Where the file goes, who can access it, how long it is kept, whether it is used to train models, and how you can delete it. Read the answers in the privacy policy, not only on the home page.

Does the text I get back stay private?

Your transcripts are tied to your account. Sharing is a choice you make. Read the policy for how long data is kept and how to delete it.

Read next

Captions

How to Create an SRT File (Step by Step)

Create an SRT subtitle file from audio or video: format rules, a sample, manual and automatic methods, and the checks that stop import errors.

Updated October 21, 2026