
Postio.co.uk
Ideal postcodes
Fetchify
Smarty
Data8 UK
ZIP Code API
Data8 UK PredictiveAddress
The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.

Coolors.co
Web Gradients
Color Hunt
Tailwind CSS
ColorSpace
Grabient
Mesh Gradients by ls.graphics
As a free css gradient generator tool, this website lets you create a colorful gradient background for your website, blog, or social media profile.

Which is more popular?
Based on our record, CSSGradient.io seems to be more popular. It has been mentioned 40 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | postaldatapi.com | cssgradient.io |
| Pricing | — | |
| Company | Startup from the United States · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


PostalDataPI is a global postal code validation and enrichment API covering 240+ countries and territories. One API, one key, one flat rate — $0.000028 per query with no tiers or subscriptions. What you get back: Up to 18 metadata fields per postal code — city, state/region, coordinates,...
No description of CSSGradient.io yet.
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
PostalDataPI Now Returns 18 Fields Per Postal Code — for 240+ Countries
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CSSGradient.io - in a minute
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using PostalDataPI and CSSGradient.io. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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Gradient, aka 1-click Jupyter Notebook, is a fully-configured notebook packed with all the necessary frameworks, libraries, and drivers. Gradient offers pre-configured templates or ML frameworks to hit the ground...
Recommendations tracked on public social media and blogs since March 2021.


Tracking PostalDataPI since Apr 2026.
As for the gradient color, I am a little bit married to it since the app implements very similar one. I wanted to keep the theme somewhat consistent between app and website. I assume you are referring to the website since you also... - Source: Hacker News / over 1 year ago
Resource: CSS Gradient Pro Tip: Play around with their "Color Stops" to fine-tune your gradients and make them unique. - Source: dev.to / almost 2 years ago
This creates a horizontal gradient from a warm orange to a soft peach. You can adjust the colors and direction to suit your needs. For more complex gradients, check out tools like CSS Gradient to generate the code for you. - Source: dev.to / almost 2 years ago
When comparing PostalDataPI and CSSGradient.io, you can also consider the following products.

Fast UK address, email & phone validation APIs for developers. Official Royal Mail PAF data. Pay as you go, 100 free lookups.
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We help businesses improve UX and data quality with a cutting edge address validation service.
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Curated collection of 180 free fresh background gradients 🚀
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Fetchify delivers fast, accurate address, email, phone and bank validation tools that help businesses capture clean, verified customer data, reduce failed deliveries and improve checkout experiences worldwide.
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Curated collection of beautiful colors, updated daily
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