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Browser Extensions · head to head

Fireshot vs uBlock Origin

Fireshot logo

Fireshot

Browser Extensions

Full webpage screenshots

From
Free
Rated
-
Full reviewWebsite
uBlock Origin logo

uBlock Origin

Browser Extensions

Free, open-source ad content blocker

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Fireshot pro yearly license is capped at 2 devices for personal use; additional devices require a separate license purchase; uBlock Origin cNAME uncloaking of third-party trackers disguised as first-party is only available on Firefox, because the required DNS API does not exist in Chromium
  • They diverge on capability: Fireshot covers Full page capture, uBlock Origin covers Ad blocking.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Fireshot and uBlock Origin actually diverge.

Attributes where Fireshot and uBlock Origin differ
AttributeFireshotuBlock Origin
Pricing modelfreemiumfree
Founded20072014

Identical on both: starting price (Free), free tier (Yes), platforms (Chrome, Firefox, Edge, Opera), user rating (Not yet rated), category (Browser Extensions).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Fireshot

  • Full page capture
  • Multiple formats
  • Annotation
  • Direct upload

Only in uBlock Origin

  • Ad blocking
  • Tracker blocking
  • Malware domain blocking
  • Custom filter lists

Both cover

  • Chrome support
  • Firefox support
  • Edge support
  • Opera support

What people use each for

The jobs each tool is most often brought in to do.

Fireshot

  • Capturing and annotating full-page screenshots of web pagesnot uBlock Origin

uBlock Origin

  • Ad and tracker blocking in web browsersnot Fireshot
  • Privacy protection while browsing the webnot Fireshot
  • Reducing bandwidth usage by blocking adsnot Fireshot
  • Users seeking open-source browser extensionsnot Fireshot

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Fireshot

  • Pro yearly license is capped at 2 devices for personal use; additional devices require a separate license purchase

uBlock Origin

  • CNAME uncloaking of third-party trackers disguised as first-party is only available on Firefox, because the required DNS API does not exist in Chromium
  • HTML filtering of response bodies requires the webRequest.filterResponseData API, which is only available in Firefox
  • On Chromium-based browsers uBO is not reliably ready at browser launch, so tracker and advertisement payloads can reach already-open tabs before filtering starts
  • Pre-fetch blocking is not reliable on Chromium-based browsers because they give websites precedence over user settings
  • The Chromium build does not use the WebAssembly filtering code paths, because the extra manifest permission would create friction publishing to the Chrome Web Store
  • LZ4 storage compression is Firefox only, and on Chromium in incognito mode IndexedDB resets, so uBO launches with out-of-date filter lists

Pricing, plan by plan

Fireshot

Free
  • FreeFree
    • Full page capture
    • PNG/JPEG export
    • Basic annotation

uBlock Origin

Free
  • FreeFree
    • Ad blocking
    • Tracker blocking
    • Custom filter lists

Which should you pick?

Choose Fireshot if

  • You need full page capture.
  • You want to start without paying.
  • You work on Chrome, Firefox, Edge, Opera.
  • You also want multiple formats.
Fireshot review

Choose uBlock Origin if

  • You need ad blocking.
  • You want to start without paying.
  • You work on Chrome, Firefox, Edge, Opera.
  • You also want tracker blocking.
uBlock Origin review

Questions people ask

Is Fireshot or uBlock Origin better?
Neither clearly leads. Fireshot starts at Free and uBlock Origin at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fireshot or uBlock Origin?
Fireshot starts at Free and uBlock Origin at Free.
Does Fireshot or uBlock Origin run on more platforms?
Both run on Chrome, Firefox, Edge, Opera, so platform support will not decide this one for you.
Can I use Fireshot for free?
Both have a free tier, so you can try either at no cost before committing.
What is Fireshot best used for?
Fireshot is most often used for capturing and annotating full-page screenshots of web pages. Of those, capturing and annotating full-page screenshots of web pages is not what uBlock Origin is typically brought in for.
What can Fireshot do that uBlock Origin cannot?
Fireshot covers Full page capture, Multiple formats, Annotation, Direct upload. uBlock Origin covers Ad blocking, Tracker blocking, Malware domain blocking, Custom filter lists. Both handle Chrome support, Firefox support, Edge support, Opera support.

Answered from the vendors’ own pages

uBlock Origin: How much does uBlock Origin cost?

uBlock Origin is completely free and open-source software with no licensing fees, subscriptions, or commercial restrictions.

Source
uBlock Origin: Is uBlock Origin open source?

Yes, uBlock Origin is distributed under the GPL-3.0 License with source code publicly available on GitHub. The project encourages community review and contribution.

Source
uBlock Origin: Does uBlock Origin accept donations?

No, uBlock Origin explicitly does not accept donations. The project instead encourages users to support the developers maintaining the filter lists that power the extension.

Source
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