Products on Daniel Zhang

IndieResizer

Mon, 01 Jan 0001 00:00:00 +0000

A privacy-first batch image resizer and icon generator for indie hackers, developers, and creators.

IndieResizer makes it easy to resize, crop, and generate multiple image sizes directly in your browser.

No uploads. No external servers. No complicated image-processing workflow.

Built for developers

Preparing images for different projects often means repeating the same resize and export operations over and over.

IndieResizer is designed to make that workflow faster and simpler.

Whether you are preparing assets for a browser extension, a web application, a mobile app, or a new SaaS product, you can process your images directly in the browser without sending them to a remote service.

Core features

Batch image resizing

Process multiple images in a single workflow instead of resizing files individually.

Multiple output sizes

Generate the image sizes you need for different projects, platforms, and development workflows.

Image cropping

Crop images before resizing to create cleaner and more consistent assets.

Icon generation

Generate multiple icon sizes from a source image for browser extensions, applications, developer tools, and digital products.

Local processing

Images are processed directly in your browser.

Your source files do not need to leave your device.

Privacy by design

Privacy is a core part of IndieResizer.

The extension does not require you to upload your images to a remote server. Image processing happens locally in the browser, keeping your source files on your device.

This makes IndieResizer a practical choice for working with:

Private assets
Unpublished product designs
Application icons
Website assets
Internal project materials
Client or proprietary images

Your images stay on your device while you work.

Useful for

IndieResizer is designed for people who regularly need to prepare image assets for:

Browser extensions
Web applications
Mobile applications
Developer tools
SaaS products
Open-source projects
Personal websites
Product launches

A simple workflow

The workflow is intentionally straightforward:

Select your images.
Choose the required output sizes.
Crop or resize when needed.
Generate the output files.
Continue building your project.

No complicated configuration. No upload step. No external image-processing service.

Open source

IndieResizer is developed independently and built with a privacy-first approach.

The source code is available on GitHub:

View IndieResizer on GitHub

Built for a simpler workflow

IndieResizer is one of several small developer-focused tools I am building as an independent developer.

The goal is simple:

Build useful software that is fast, focused, and respectful of your privacy.

PulseTimer

Mon, 01 Jan 0001 00:00:00 +0000

A sleek, minimalist countdown timer and alarm for focused work, quick sessions, and everyday browser reminders.

PulseTimer is designed for people who want a simple timer without opening another application or dealing with unnecessary complexity.

Set a countdown. Start a session. Get back to what you are doing.

Built for simplicity

Timers should not require complicated workflows.

PulseTimer keeps the experience focused on the essentials: set a duration, start the timer, and receive a reminder when the time is up.

Whether you are working on a short task, taking a break, preparing for a meeting, or simply need a quick reminder, PulseTimer stays out of your way.

Core features

Countdown timer

Start a countdown in seconds and keep the timer available while you work.

Alarms

Set reminders for tasks, breaks, meetings, or anything else that needs your attention.

Quick sessions

Create short countdowns without configuring complicated workflows or settings.

Minimal interface

PulseTimer keeps the interface focused on the timer itself.

No unnecessary dashboards, accounts, or complicated configuration.

Lightweight

Designed to be fast and lightweight, so it stays out of your way while you work.

Privacy by design

PulseTimer is designed with privacy in mind.

The extension does not require an account and does not need to send your timer data to a remote server.

Your timer experience stays local to your browser.

No account. No unnecessary data collection. Just a simple timer.

Useful for

PulseTimer works well for everyday situations such as:

Focused work
Short work sessions
Break reminders
Meetings
Cooking
Exercise
Daily browser reminders

It is intentionally simple:

Set a timer and get on with your day.

A simple workflow

Using PulseTimer takes only a few seconds:

Set the duration.
Start the countdown.
Continue with your task.
Get notified when the timer finishes.

No complicated setup. No account required. No unnecessary workflow.

Open source

PulseTimer is developed independently with a focus on simplicity, privacy, and a lightweight browser experience.

The source code is available on GitHub:

View PulseTimer on GitHub

Built for focused moments

PulseTimer is one of several small, focused tools I am building as an independent developer.

The goal is simple:

Build useful software that is fast, focused, and respectful of your privacy.

Unix Timestamp Converter & Epoch Pro

Mon, 01 Jan 0001 00:00:00 +0000

Fast and privacy-first Unix timestamp conversion built for developers.

Unix Timestamp Converter & Epoch Pro makes it easy to convert Unix timestamps and dates without leaving your browser.

It automatically detects common 10-digit and 13-digit Unix timestamps and provides clear local time, UTC time, and relative time information.

Built for developers

Unix timestamps appear everywhere in software development.

Whether you are debugging an API response, checking a database record, reading server logs, or working with distributed systems, converting timestamps should not require opening another website or switching between tools.

Unix Timestamp Converter & Epoch Pro keeps the conversion workflow directly in your browser.

Core features

Smart timestamp detection

Automatically recognizes the two most common Unix timestamp formats:

10-digit timestamps in seconds
13-digit timestamps in milliseconds

Timestamp conversion

Convert Unix timestamps into readable dates and times with a single glance.

Date conversion

Convert date and time values back into Unix timestamps when working with APIs, databases, logs, and backend systems.

Local and UTC time

View both local time and UTC time to quickly understand timestamps across different environments and time zones.

Relative time

See whether a timestamp is in the past or future with a human-readable relative time.

Selection-based conversion

Select a timestamp directly on a webpage and send it to the extension for quick conversion.

Fast and lightweight

Designed for quick everyday conversions without unnecessary interfaces or complicated configuration.

Privacy by design

All timestamp conversion happens locally in your browser.

Your timestamp values do not need to be uploaded to a remote server, making the extension suitable for working with development data, logs, API responses, and other potentially sensitive information.

Your timestamp data stays in your browser.

Useful for

Unix Timestamp Converter & Epoch Pro is designed for everyday development workflows, including:

API responses
Database records
Server logs
JSON data
Debugging
Distributed systems
Backend development
Data analysis

Whether you are investigating a production issue or simply checking a timestamp, the goal is to make the conversion immediate.

A simple workflow

Using Unix Timestamp Converter & Epoch Pro takes only a few seconds:

Enter or select a Unix timestamp.
Let the extension detect the timestamp format.
View the local time, UTC time, and relative time.
Convert dates back to timestamps when needed.
Continue working without leaving your browser.

No external website required. No unnecessary workflow.

Open source

Unix Timestamp Converter & Epoch Pro is developed independently with a focus on speed, privacy, and a practical developer experience.

The source code is available on GitHub:

View Unix Timestamp Converter & Epoch Pro on GitHub

Built for everyday development

Unix Timestamp Converter & Epoch Pro is one of several small, focused developer tools I am building as an independent developer.

The goal is simple:

Build useful software that is fast, focused, and respectful of your privacy.