Software Alternatives & Startups

modheader VS Stencil

Compare modheader VS Stencil and see what are their differences

modheader

Free browser extension to modify HTTP request and response headers. No sign-up. Works on Chrome, Firefox, and Edge.

Rating
0 reviews
Stencil

Stencil is a the fastest and simplest way to design images and graphics for digital marketing.

Rating
0 reviews
Pricing
Freemium
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, Stencil seems to be more popular. It has been mentioned 3 times since March 2021.

social mentions
0 vs 3
Developer Tools popularity
100% vs 0%
alternatives listed
26 vs 240+

Base details

Website, pricing, platforms and company facts side by side.

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modheader
Stencil
Website app.modheader.com getstencil.com
Pricing —
Platforms —
Browser Wordpress Google Chrome Firefox +1
Company — 2013
Listed in

About modheader and Stencil

In their own words, as submitted to SaaSHub.

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modheader
Stencil

No description of modheader yet.

Stencil is the fastest way to design graphic for social media, blogs, newsletters, print on demand (POD), logos or anything else visual or creative that you can imagine. We provide you with over 4 million photos and icons that you can use, royalty-free. Just find the perfect photo or icon, add it...

Read more about Stencil

Features and specs

What each product offers, as listed by its team.

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modheader 5 features
Stencil 7 features
  • Easy HTTP Header Modification
    ModHeader allows users to easily add, modify, or remove HTTP request and response headers directly from the browser without needing to write code or set up a proxy server.
  • User-Friendly Interface
    The extension provides a simple, intuitive UI where users can create profiles, toggle headers on/off, and manage multiple header configurations with minimal technical knowledge.
  • Profile Management
    Users can save multiple header profiles for different testing scenarios (e.g., different environments, authentication tokens, or user agents) and switch between them quickly.
  • Cross-Browser Support
    ModHeader is available for major browsers including Chrome, Firefox, and Edge, making it versatile for developers who work across different browser environments.
  • Useful for Development and Testing
    It's particularly helpful for developers and QA testers who need to simulate different API keys, test CORS configurations, spoof user agents, or debug header-related issues without modifying server code.

Possible disadvantages

  • Browser Extension Limitations
    As a browser extension, ModHeader only affects requests made through that specific browser, meaning it cannot modify headers for requests from other applications, mobile apps, or backend services.
  • Security and Privacy Concerns
    Browser extensions with permissions to read and modify web requests pose potential privacy and security risks, as they can technically access sensitive data transmitted through the browser.
  • Premium Features Behind Paywall
    Some advanced features, such as more complex header rules or higher usage limits, may require a paid subscription, limiting functionality for free-tier users.
  • Limited to Client-Side Testing
    ModHeader cannot be used for server-side header manipulation or automated testing pipelines, making it less suitable for CI/CD integration compared to command-line tools or API testing frameworks.
  • Potential for Misconfiguration
    Users unfamiliar with HTTP headers might inadvertently create conflicting or invalid header configurations that cause unexpected application behavior or debugging confusion.
  • Photos
    2,300,000+ Royalty-free Photos
  • Icons
    2,100,000+ Royalty-free Icons
  • Templates
    1,000+ Professionally designed templates
  • Quotes
    100,000 Quotes
  • Instant Resizing
  • Preset Sizes
    100+ Preset sizes
  • Google Fonts
    3,000+ Google Fonts

Videos

Walkthroughs and reviews on video.

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modheader 0 videos + Add
Stencil 4 videos + Add

No modheader videos yet. You could help us improve this page by suggesting one.

Stencil: The fastest way to create amazing graphics

More videos

  • - Stencil Review After 3 Years Of Using It & How It Can Speed Up Your Workflow
  • - Stencil Review - Create Social Media Graphics [AppSumo 2019]
  • - Stencil Review and Demo: Graphic Design App

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
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modheader
Stencil
100% 100%
0% 0%
0% 0%
100% 100%
100% 100%
0% 0%
0% 0%
100% 100%

User comments

Share your experience with using modheader and Stencil. For example, how are they different and which one is better?

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

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modheader no reviews yet
Stencil no reviews yet

Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

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modheader 0 mentions
Stencil 3 mentions

Tracking modheader since Aug 2026.

Alternatives to modheader and Stencil

When comparing modheader and Stencil, you can also consider the following products.