Why does Utilo run tools in the browser instead of on a server?

Utilo is designed as a static site with no backend server. Tools run entirely in your browser using JavaScript, Web Crypto API, and Web Workers. This means sensitive data like JWTs, passwords, tokens, and documents never leave your device and cannot be logged by the hosting server.

Is Base64 encryption?

No, Base64 is not encryption. It is a text encoding format used to represent binary data in ASCII. The FAQ on the Base64 tool page explains this distinction.

How can I report a bug or suggest a feature?

Email hello@tech4dream.com with details about the issue or feature request. The team reads every message and usually replies within two to three business days. For bug reports, include which tool you used, what you entered, what you expected and what happened instead.

How is Utilo maintained?

Utilo is built and maintained by a small team of developers. Feedback from users directly shapes which tools are added and improved on the platform.

Developer Tools

Utilo

Free online developer tools that run privately in your browser

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Collection of 35+ free online tools for developers, designers and data workers including JSON formatters, QR code generators, image compressors and more, all

Overview

A look at tools.tech4dream.com

Utilo is a collection of 35+ free online developer tools designed for developers, designers and anyone working with data. The platform includes tools for API debugging, data and JSON processing, DevOps, security, and utilities. All tools run entirely in your browser with no server uploads, meaning your data never leaves your device. The site is built as a static collection of utilities served from a global edge network, offering fast performance with no sign-up required. Featured tools include JSON formatter and converter, QR code generator, barcode generator, image compressor, JWT decoder, curl converter, and many more. Utilo is free to use and may display non-intrusive advertising to sustain the service.

Feature notes

JSON formatter, validator, and converter to YAML, CSV or TypeScript
JWT decoder for inspecting token header, payload and expiry
QR code and barcode generator with custom colors and download options
Image compressor for batch processing to WebP, JPEG or PNG with quality slider
curl converter between curl, fetch, axios, Python, Go, Node and PHP
Hash generator supporting MD5, SHA-1, SHA-256, SHA-384, SHA-512
Cron expression builder and parser with next run times
JSON diff tool with structural comparison and collapsible tree
SQL formatter and dialect converter for MySQL, PostgreSQL, SQLite and SQL Server
Certificate decoder for PEM certificates, chains and CSRs with SANs and fingerprints

Pricing

Pricing model: Free

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Utilo at a glance

Community votes: 0
Followers: 0

Utilo metrics

Inspection sheet for tools.tech4dream.com: Ahrefs Domain Rating and Majestic link metrics, with the delta since the last inspection.
Metric	Value
Domain Rating	2 +1 (up) since last check
Trust Flow	4 no change since last check
Citation Flow	17 no change since last check
Referring domains	4 no change since last check
External backlinks	4 no change since last check

Domain Rating by Ahrefs inspected 7 Nov 2026, adjusted 4 Nov 2026. Primary topic: Computers/Software/Operating Systems (4). Majestic inspected 25 Oct 2026, adjusted 25 Oct 2026. Link data: Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.

Utilo domain diagnostics

Run through the diagnostics

Public RDAP record, last read 5 Nov 2026, 13:24 UTC.
Domain age	27 days
Registered	11 Oct 2026
Expires	11 Oct 2027
Registrar	Cloudflare, Inc.
DNSSEC	Not signed

Run the full check on tech4dream.com

Utilo post-launch diagnostics

Measured after Utilo went live on Launching Pro on 25 October 2026.

Domain Rating (Ahrefs): 2 +1 (up) since launch; 1 at launch (25 Oct 2026), 2 on 7 Nov 2026
Trust Flow (Majestic): 4; First measured 25 Oct 2026
Referring domains (Majestic): 4; First measured 25 Oct 2026

Day 12 since launch. Next receipt: day 30, 24 Nov 2026. The figures report a change; they do not say what caused it, and many things can. No figure here is a guess.

Biggest gains on Launching Pro

Launch tips, free to read

The playbook on Launching Pro lists what to prepare, what to post on launch day and where else to list your product.

Before the day
Launch day
That week
Beyond launch

See the launch playbook

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FAQ

Why does Utilo run tools in the browser instead of on a server?: Utilo is designed as a static site with no backend server. Tools run entirely in your browser using JavaScript, Web Crypto API, and Web Workers. This means sensitive data like JWTs, passwords, tokens, and documents never leave your device and cannot be logged by the hosting server.
Is Base64 encryption?: No, Base64 is not encryption. It is a text encoding format used to represent binary data in ASCII. The FAQ on the Base64 tool page explains this distinction.
How can I report a bug or suggest a feature?: Email hello@tech4dream.com with details about the issue or feature request. The team reads every message and usually replies within two to three business days. For bug reports, include which tool you used, what you entered, what you expected and what happened instead.
How is Utilo maintained?: Utilo is built and maintained by a small team of developers. Feedback from users directly shapes which tools are added and improved on the platform.

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Pricing

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