Skip to content
All posts

Blur private details in screenshots before you share

How showdo blurs emails, phone numbers and card numbers on your device before upload, what to check yourself, and what viewers see for each sharing choice.

Pavan Kotapally6 min read

A screenshot of a contact form where the email, phone and card number are blurred, with a note that three details were blurred on this device.

A screenshot shows everything on the screen, not just the button you meant to point at. An email in the corner, a phone number in a table, a card number in a form: they all go into the picture. If that picture ends up in a guide you share, they go with it.

This post explains how showdo handles that. It covers what gets blurred automatically and where that happens, what you should still look at before you share, and what people see for each sharing setting. It is useful even if you only want to know what to look for when you write step-by-step guides with screenshots.

What showdo blurs for you

First, on your device

When you record with showdo for Mac or showdo for Chrome, personal details are blurred in the screenshot before it is uploaded. The unblurred original is never sent to showdo's servers.

The detectors look for:

  • email addresses
  • phone numbers
  • card numbers
  • ID and bank numbers (such as IBANs and US social security style numbers)
  • access keys and secret keys
  • IP addresses
  • street addresses

The two apps find these in slightly different ways.

  • showdo for Mac reads the text in the screenshot with Apple's text recognition, which runs on your Mac. It matches that text against the detectors and blurs those spots.
  • showdo for Chrome looks at the text on the page you are recording, works out where each match sits on screen, and blurs those spots in the screenshot.

In both cases the blur is real pixel work: the area is turned into blocks and then smoothed. If the Chrome extension cannot blur a screenshot for any reason, it drops the picture. The step still uploads, just without a screenshot, so an unblurred image is never sent.

Passwords and sensitive fields

Password fields are always blurred, even if auto-blur is turned off. Chrome also boxes card number and one-time-code fields once they have something typed in them.

Typed text and step text

The words in a step get the same treatment. A typed email address becomes [email] in the step text, and other matches become [phone], [card] and so on. A workspace owner or admin can go further: they can require blurring on every capture, and they can switch typed-text capture off so typed words are replaced with a placeholder.

Then, a second check after upload

When a recording finishes and the guide is written, showdo looks again. It reads the text in each screenshot, checks it against the same patterns, and replaces any private text it finds in the step titles, descriptions and summary with placeholders.

If the workspace allows AI features, an AI review also looks for things patterns cannot recognize, like names, addresses and ID numbers. The blur is placed on the exact words the text reader found. showdo does not guess a box, so something it cannot place is reported but not blurred. If AI features are off for the workspace, the AI review does not run.

What to check before you share

Automatic blur is good, but it is not perfect. Patterns catch things that look like emails and phone numbers. They do not know that a customer's company name is private, or that an order number is sensitive for your team. Take two minutes before you share.

  1. Open Privacy on the guide. It lists every blurred area, step by step. Choose Scan guide to run another check. It shows what it found, and Blur and remove all applies the findings.
  2. Look at every screenshot. You are looking for what text detectors cannot read: faces and profile photos, logos, charts with real numbers, drawings, and text inside images.
  3. Look for names and internal details. Customer names, project names, ticket numbers and internal addresses are easy to miss because they look like ordinary words.
  4. Read the step text. Titles, descriptions and typed text are shown to everyone who can open the guide. A card number with a typo can fail the card check, so it may slip through. Read the words, not only the pictures.
  5. Check any "go to" steps. A step that opens a page shows its address as a link to anyone viewing. If that address carries an id or a token, edit it out.
  6. Add blur by hand where you need it. Open the screenshot in the image editor and use the blur tool.

Tip: Do this check once on the finished guide, not while recording. The Privacy list makes it quick, because you only need to look for what showdo did not find.

Who can see a guide

Open Share on a guide and choose who can view it.

SettingWho can open itSearch engines
Workspace onlyMembers of your workspaceNot listed
Anyone with the linkAnyone who has the linkHidden from them
PublicAnyoneMay index it

A few details matter here.

  • Drafts stay private. Only members can open a guide that is not published, whatever its sharing setting.
  • Workspace only means sign in. A visitor who is not signed in is asked to sign in. Someone who is signed in but not a member of the workspace cannot open it.
  • Admins can switch sharing off. A workspace owner or admin can turn off link sharing, public links, or both. A guide set to a choice the admin has since turned off is treated as the next safer setting, and the Share window says why.
  • Link and public are for anyone. Someone with a link can pass it on. Choose Public only for guides you are happy to have on the open web.

What an anonymous viewer sees

Someone outside your workspace who opens a link or public guide sees the finished guide: the title and summary, the author's name and photo, the steps with their words, the screenshots (already blurred), any typed text and keys pressed. They can play the walkthrough and print the guide or save it as a PDF.

They do not get the rest of what showdo recorded about each step. That stays on the server:

  • the transcript of your narration
  • window and page titles
  • details about the thing that was clicked
  • steps you hid
  • the list of blurred areas and the kinds of private data found

Page addresses are cut down to the site's own address, without the rest of the path, except on "go to" steps, which show their link. Members of the workspace see the full guide, with an Open in workspace link.

Note: The unblurred original of a screenshot stays on the device that recorded it. Only the blurred picture is uploaded, so only the blurred picture can be shown to viewers.

Questions

Does showdo blur before the screenshot leaves my computer?

Yes. In showdo for Mac and showdo for Chrome the blur is applied on your device, and only the blurred picture is uploaded.

Will it catch everything?

No. It catches the patterns above and, if your workspace allows AI features, names and addresses on a second pass. It cannot know what is private only to your team, so look through the guide before you share it.

Are passwords captured?

No. Password fields are always blurred, and showdo does not read them while you record.

No. The narration transcript is not sent to anyone outside the workspace. Viewers get the steps, the blurred screenshots and the words in them.

Where do I turn auto-blur on for everyone?

A workspace owner or admin can require blurring on every capture, and can also turn off typed-text capture. Both are workspace rules. See the docs for the full sharing steps, or the privacy and share and embed pages for an overview.

All posts

Try showdo on your next task

Record it once. showdo makes the guide and a narrated video, blurs private details and translates both for your team.

Cookie settings

Pick what showdo can save on this device.

  • Needed to work

    Keeps you signed in and remembers your cookie choices.

    Always on
    See what's stored
    • Your cookie choicesCookie

      6 months

      Remembers what you chose here so we don't ask again.

    • Sign-inCookie

      30 days

      Keeps you signed in to showdo.

    • Sign-in for this visitCookie

      Until you close the browser

      Signs you out when you close the browser, if you didn't choose to stay signed in.

    • Sign-up age checkCookie

      1 hour

      Remembers that you ticked "I'm 18 or older" while you finish making an account, including with GitHub or Google.

    • Sign-in with GitHub or GoogleCookie

      5 minutes

      Keeps the sign-in with GitHub or Google safe while it finishes.

    • Tips you have seenSaved on this device

      Until you clear it

      Remembers which tours you finished, skipped or turned off, so they don't come back each time you open showdo.

  • Remember my settings

    Remembers things like your theme, where you left off in a guide and which tips you have seen.

    See what's stored
    • ThemeSaved on this device

      Until you clear it

      Remembers light, dark or your device setting.

    • Side menu sizeSaved on this device

      Until you clear it

      Remembers whether the side menu is open or small.

    • Recent guides listSaved on this device

      Until you clear it

      Remembers whether the recent guides in the side menu are shown or minimised.

    • Requests layoutSaved on this device

      Until you clear it

      Remembers if guide requests show as a list or a board.

    • Extra settings shownThis tab only

      Until you close the tab

      Keeps a section's extra options open while you move around Settings.

    • Home layoutSaved on this device

      Until you clear it

      Remembers if your recent guides show as cards or a list.

    • Guides layoutSaved on this device

      Until you clear it

      Remembers if your guides show as cards or a list.

    • Folders panelSaved on this device

      Until you clear it

      Remembers whether the folders panel is open.

    • Passkey sign-inSaved on this device

      Until you clear it

      Asks for your passkey first when you sign in on this browser, because you used one here before. Keeps a scrambled form of your address, not the address itself.

    • How you last recordedSaved on this device

      Until you clear it

      Starts New guide with Chrome or Mac, whichever you used last.

    • showdo for MacSaved on this device

      Until you clear it

      Remembers that this browser has talked to showdo for Mac.

    • Where you left offSaved on this device

      Until you clear it

      Reopens a guide at the last step you reached.

    • Intro video tucked awaySaved on this device

      Until you clear it

      Remembers that you tucked the home page intro video into the side, so it stays there next time.

    • Video export choicesSaved on this device

      Until you clear it

      Remembers your last size, quality and format when you export.

    • Team set-up progressThis tab only

      Until you close the tab

      Keeps what you typed if you refresh while setting up your team.

    • Workspace switch promptThis tab only

      Until you close the tab

      Asks about switching workspaces only once per visit.

  • Usage statistics

    Helps us see which parts of showdo get used so we can improve them.

    See what's stored
    • Usage statisticsSaved on this device

      Until you clear it

      A random number for this browser, so we can count which pages and buttons get used.

    • Usage statistics for this visitThis tab only

      Until you close the tab

      Groups the pages you open in this tab into one visit.

    • Usage statistics turned offSaved on this device

      A moment

      Stops usage statistics straight away when you turn them off. Removed at the same moment.

More in our Cookie Policy.