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@toolsphare

Muhammad Wasim

@toolsphareJoined September 2026

Founder of ToolSphare; privacy-minded free developer and productivity utilities.

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About

I build ToolSphare, a privacy-minded collection of free browser utilities for developers and everyday workflows.

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Muhammad Wasim's blogs

ToolSpharetoolsphare-dev-2026.hashnode.dev20 posts

Unix Timestamps Without Surprises: Seconds vs Milliseconds, Time Zones, Leap Seconds and 2038

A Unix timestamp looks like the simplest possible way to store time: one integer, no time zone, no formatting. Then a log line says an event happened in January 1970, a dashboard is off by exactly fiv

7 min readtoolsphare-dev-2026.hashnode.dev

19h ago

Diffing JSON Without Losing Your Mind: Key Order, Arrays, Numbers and Noise

You changed one setting in a config file, ran git diff, and got forty red and green lines back. Or an API response "looks the same" as yesterday's, yet a test is failing. Comparing JSON sounds trivial

7 min readtoolsphare-dev-2026.hashnode.dev

1d ago

Base64 Is Not Encryption: Size Overhead, Data URIs, URL-Safe Variants and Common Bugs

What Base64 really does, what it costs, and the mistakes that break it in production

7 min readtoolsphare-dev-2026.hashnode.dev

2d ago

Regex Without Regret: Anchors, Lazy Quantifiers and Catastrophic Backtracking

Regular expressions have a reputation for being write-only code. You craft a pattern at 2 a.m., it passes the three examples you tried, and six months later nobody (including you) can say what it matc

6 min readtoolsphare-dev-2026.hashnode.dev

3d ago

SHA-256, SHA-1 and MD5 in 2026: What a Hash Is Actually For

Hash functions show up everywhere in a developer's week: a checksum next to a download, an ETag in an HTTP response, a Git commit ID, a cache key, a webhook signature. Because they look alike (a long

6 min readtoolsphare-dev-2026.hashnode.dev

4d ago

Muhammad Wasim

About

Available for

Muhammad Wasim's blogs

Unix Timestamps Without Surprises: Seconds vs Milliseconds, Time Zones, Leap Seconds and 2038

Diffing JSON Without Losing Your Mind: Key Order, Arrays, Numbers and Noise

Base64 Is Not Encryption: Size Overhead, Data URIs, URL-Safe Variants and Common Bugs

Regex Without Regret: Anchors, Lazy Quantifiers and Catastrophic Backtracking

SHA-256, SHA-1 and MD5 in 2026: What a Hash Is Actually For

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Muhammad Wasim

About

Available for

Muhammad Wasim's blogs

Unix Timestamps Without Surprises: Seconds vs Milliseconds, Time Zones, Leap Seconds and 2038

Diffing JSON Without Losing Your Mind: Key Order, Arrays, Numbers and Noise

Base64 Is Not Encryption: Size Overhead, Data URIs, URL-Safe Variants and Common Bugs

Regex Without Regret: Anchors, Lazy Quantifiers and Catastrophic Backtracking

SHA-256, SHA-1 and MD5 in 2026: What a Hash Is Actually For