Free Online Developer Tools

Powerful Tools for Developers & Creators

AKSICM provides a collection of fast, free, privacy-focused online tools for programmers, web designers, and SEO professionals. All processing happens locally in your browser — no data is ever uploaded.

JSON Formatter Explore All Tools

6 Tools 100% Client-Side Free Forever

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Type or paste text below to see real-time word and character counting in action

Live Word Counter

Instant

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This live demo runs entirely in your browser. Try the full tool with more features below. Open Full Tool

Our Tools

Everything you need, running securely in your browser

JSON Formatter & Validator

Format, minify, validate, and beautify your JSON data instantly. Support for syntax highlighting, error detection, and one-click copy. The essential tool for every developer working with APIs and data exchange.

Base64 Encoder / Decoder

Quickly encode text to Base64 or decode Base64 strings back to plain text. Supports UTF-8 and handles binary-safe conversion.

URL Encoder / Decoder

Encode or decode URL parameters with proper RFC 3986 compliance. Ideal for SEO professionals handling query strings and web developers debugging links.

Word & Character Counter

Count words, characters (with and without spaces), sentences, paragraphs, and estimate reading time. Perfect for content creators and SEO copywriters.

Text Cleaner & Formatter

Remove extra whitespace, blank lines, and normalize text formatting in one click. Clean up messy copied content from PDFs, emails, or web pages.

Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds. Includes real-time current timestamp display.

Why AKSICM?

Built with privacy, speed, and simplicity in mind

100% Private

Your data never leaves your device. All processing is local.

Lightning Fast

No server roundtrips. Instant results on any device.

Always Free

No sign-ups, no paywalls, no usage limits. Ever.

Who Uses AKSICM

Our tools serve professionals across multiple disciplines

Software Developers

Format API responses, encode tokens, convert timestamps, and validate JSON — all in your browser.

JSONBase64Timestamp

Web Designers

Count characters for UI constraints, clean copy, encode URL parameters, and test Base64 assets.

Text CleanerWord Counter

SEO & Content Marketers

Optimize meta descriptions, estimate reading time, and clean up formatted text from any source.

Word CounterText Cleaner

Data Analysts

Format JSON datasets, convert DB timestamps, encode API data, and clean text for analysis.

JSONTimestampBase64

Students & Educators

Learn data encoding, practice with JSON, count words for assignments — free educational resources.

Base64JSONWord Counter

Freelancers

Access professional-grade tools from any device. No installation needed, always free to use.

All ToolsNo Install

Frequently Asked Questions

Everything you need to know about AKSICM tools

Yes, absolutely. All AKSICM tools run entirely in your browser using client-side JavaScript. Your data never leaves your device — we do not upload, store, or process any input on our servers. You can disconnect your internet after loading the page and all tools will still work.

No. AKSICM is completely free and requires no registration or sign-up. There are no premium tiers, no usage limits, and no hidden fees. Simply visit the site and start using any tool immediately.

Yes. Once a tool page is loaded, you can disconnect from the internet and it will continue to work. All processing happens locally. However, you will need an initial connection to load the page, and some UI assets (fonts) may not display when offline.

We display advertisements through Google AdSense to support the operational costs of the site. We use Plausible Analytics for anonymous traffic measurement (no personal data collected). No tool input data is ever used for advertising purposes. See our Privacy Policy for full details.

Three things: Privacy — no data leaves your browser. Speed — no server roundtrips mean instant results. Simplicity — clean, ad-minimal interface with no distractions. We focus on doing a few things exceptionally well rather than offering hundreds of mediocre tools.

Yes. We plan to expand our tool collection based on user feedback and demand. If you have a specific tool request, please contact us at jiang16651@126.com — we'd love to hear what would help your workflow.