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Collaboration app for UI designers & frontend developers

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The fonts, colours and CSS of any page, one click away.

Which is more popular?
Based on our record, Zeplin seems to be more popular. It has been mentioned 23 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | zeplin.io | codespecimen.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from the United States | — |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Zeplin yet.
Code Specimen is a free browser extension for Chrome and Firefox that shows you what any web page is made of. Hover over a heading, a button or an image and it outlines itself with its tag and size. Click to lock it, and a side panel beside the page shows its font, colours, spacing and CSS, each...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Zeplin is best suited for designers and developers working in teams where clear design specifications and organized collaboration are critical. It's particularly beneficial for teams using Figma, Sketch, or Adobe XD who want to ensure precise design implementation and reduce misunderstandings between design and development departments.
No analysis of Code Specimen yet.
Walkthroughs and reviews on video.
Zeplin Basics: Design Systems
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Zeplin and Code Specimen.
Code Specimen's answer:
Code Specimen reads a web page for you. Hover over any heading, button or image and its font, colours, spacing and CSS appear in a side panel beside the page, each value with its own copy button, so you never need to open DevTools or dig through someone else's stylesheet. The panel sits beside the site rather than on top of it, so nothing you're looking at gets covered, and opening it never reloads the page. Four tabs cover the whole job: Element for one element in full, Type for the whole type scale, Colours for the real palette with contrast ratios, and Assets for every image on the page. It's completely free, with no account, no analytics and no ads.
Code Specimen's answer:
Because the features people actually install a tool like this for are free. Copying a colour or a font size isn't locked behind a plan, and there's no account to create and no daily limit. The deeper tools are free too: copying a whole component as HTML and CSS with its hover and focus styles and media queries, editing values live, seeing hover and focus states, finding every use of a colour, and an eyedropper for colours inside photos. It's also built to be trusted: no analytics, no ads, it runs only when you open it, and it asks for four browser permissions at most. Teams using Tailwind can convert any component into Tailwind classes with their own Anthropic, OpenAI or Google Gemini key, and Code Specimen charges nothing for it.
Code Specimen's answer:
Designers and front-end developers. Designers use it to study a site's type scale and palette, since those give a site its feel. Developers use it to get exact values in px or rem, or to copy a whole component with its hover and focus styles, without opening DevTools. It also helps anyone moving a site to a new platform who wants to take the existing look with them, and teams that build with Tailwind.
Code Specimen's answer:
Code Specimen is a browser extension for Chrome and Firefox, built on the browser's own extension APIs: the side panel, active tab, scripting and storage permissions. Its optional Tailwind conversion connects to the Anthropic, OpenAI or Google Gemini APIs using the user's own key.
Code Specimen's answer:
Code Specimen is free, has no accounts and no analytics, so there's no customer list to draw from, and naming companies without permission or proof would be inaccurate. If SaaSHub forces an answer, ask the founder whether any known teams use it and are happy to be named.
Share your experience with using Zeplin and Code Specimen. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


As aforementioned, Zeplin suffers some inherent drawbacks that may dent designers’ hopes for faster, easy, and reliable UI design. To avert such scenarios, you don’t have to get stuck with Zeplin as there are numerous...
Zeplin is super affordable. It offers 2 plans: Team, which costs $8.00 per user per month, and Establishment, which costs $16.00 monthly. Zeplin also provides a feature-limited Free Plan and Enterprise Plan.
Zeplin is a workspace collaboration tool to document what to build and how designs should behave in a central collaborative place for the entire dev team.
We have no reviews of Code Specimen yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Tools like Zeplin's AI layer, Supernova, and the emerging generation of Figma plugins with AI backends do this today. The output is not a PDF full of screenshots. It is structured data: exact values, token references, and context — the... - Source: dev.to / 7 months ago
Zeplin.io AI-powered design-to-dev handoff. - Source: dev.to / over 1 year ago
Additionally, thank you to all our community launch partners across the frontend ecosystem for helping us bring Storybook 8 to the world! Thanks to Chromatic, Figma, ViteConf, Omlet, DivRiots, story.to.design, StackBlitz, UXpin, Nx, Mock... - Source: dev.to / over 2 years ago
Tracking Code Specimen since Sep 2026.
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