
10015.io
Bitty Coder
CodeSwissKnife
ToolKitKE
devtoolz.dev
Code Beautify JSON Validator
FreeFormatter
Free online tools: JSON formatter, password generator, QR code maker, calculators, converters and more. Fast, private, no login — everything runs in your browser.

Zoho Invoice
Bill.com
Wise
InvoiceOcean
ChargeDesk
EasyBill
Agnitumus Billing System
The Invoice Machine is an online invoicing service with a simple and elegant user interface.
Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | codekithub.com | invoicemachine.com |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from Sweden |
| Listed in |
What each product offers, as listed by its team.


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


No analysis of CodeKitHub yet.
Overall verdict
Why this product is good
Recommended for
Freelancers, small business owners, and entrepreneurs who require a simple, intuitive platform for invoicing and keeping track of client payments without the need for complex accounting features.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing CodeKitHub and The Invoice Machine.
CodeKitHub's answer
CodeKitHub's answer
Compared to single-purpose sites like JSONFormatter.org or CodeBeautify that only handle one task, CodeKitHub covers the same ground plus image, PDF, QR, and calculator tools in one place — useful if you regularly switch between different tool types during a workday.
Unlike FreeFormatter (which recently shut down its service), CodeKitHub's tools require no backend at all — everything runs as static, client-side JavaScript, so there's no server cost pressure driving ads, paywalls, or future shutdowns of the kind that killed similar sites.
If you need a tool site in a language other than English — Spanish, French, German, Japanese, Korean, Chinese, and others — CodeKitHub is one of the few free tool sites that actually localizes the full interface rather than just running it through machine translation on top of an English-only tool.
CodeKitHub's answer
CodeKitHub serves two overlapping groups:
Traffic data shows both groups in practice: technical tools (QR generator/decoder, Base64 encoder, JSON tools) draw developer-heavy referral sources like Hacker News and ChatGPT, alongside broader organic search traffic for everyday utility tasks.
CodeKitHub's answer
CodeKitHub started as a small set of browser-based developer utilities and grew into a 120+ tool collection covering JSON formatting, encoding, image/PDF processing, calculators and more. The core principle from the start was that every tool should run entirely client-side — no backend, no data leaving the user's browser — which keeps the tools fast, private, and cheap enough to run without ads getting in the way. The site has since expanded to 13 languages to serve users beyond English-speaking markets.
CodeKitHub's answer
Share your experience with using CodeKitHub and The Invoice Machine. 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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The Invoice Machine has all the basic features of an online invoicing tool. It simplifies bookkeeping and makes invoice generation a breeze. The API is open source, which means you can modify it with a few HTTP POST...
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