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Image Compressor

Compress JPG, PNG, and WebP images by up to 80% without losing quality.
Merge PDF

Combine multiple PDF files into one clean document instantly.
Word Counter

Count words, characters, sentences, paragraphs, and reading time in real time.
JSON Formatter

Format, validate, beautify, and minify raw JSON string inputs.
Password Generator

Generate secure, cryptographically random passwords with custom symbols.
QR Code Generator

Create custom QR codes for URLs, text, Wi-Fi, and contact details.
JPG to PDF

Convert JPG and PNG images into a clean single PDF file.
Case Converter

Convert text to UPPERCASE, lowercase, Title Case, camelCase, and snake_case.
Base64 Encoder

Encode text or images into standard Base64 format strings.
Percentage Calculator

Calculate percentage of values, percentage differences, and changes easily.
Color Picker

Pick colors from screen or image and export HEX, RGB, and HSL formats.
SERP Preview Tool

Simulate how your meta title and description appear in Google search results.

Why Choose TinyToolzz?

Built from the ground up for radical speed, privacy, and simplicity

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Your files never leave your device. All processing occurs 100% locally in your web browser.
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Frequently Asked Questions

Everything you need to know about using TinyToolzz

What is TinyToolzz?
TinyToolzz is a browser-based suite of online utilities for images, PDFs, text, developer code, calculators, and unit converters. Every tool runs directly inside your web browser.
Are all tools on TinyToolzz free?
Yes. All tools on TinyToolzz are 100% free with no premium plans, hidden subscriptions, or daily limits.
Do I need to create an account?
No. You never need to sign up, provide an email address, or log in to use any tool on TinyToolzz.
Is my data safe? Do files get uploaded to a server?
Your files and text inputs are completely private. All processing is performed client-side using JavaScript and Web APIs. Zero file data is ever transmitted to external servers.
Do the tools work on mobile devices?
Yes! TinyToolzz is designed mobile-first and works seamlessly across iOS Safari, Android Chrome, mobile browsers, tablets, and desktop computers.

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Stopwatch

Precision millisecond stopwatch with lap and split logging. Start, pause and log laps with best and worst highlighting - all time kept via wall-clock timestamps in your browser.

Ready
00:00:00.000
Press Start to begin
Elapsed (ms)0
Elapsed (seconds)0.000
Laps0
StateIdle
Laps No laps yet
#LapSplit
Laps appear here after you press Lap while running.
Copy Lap table

Technical Specifications

How elapsed time and laps are kept with background accuracy.

SpecificationDetails
Time sourceDate.now() wall-clock timestamps, not counter increments
Elapsed formulaelapsed = (running ? Date.now() - startMs : pausedMs) + accumulatedMs
Refresh cadence10 ms interval while running, wall-clock diff so throttling does not drift
Display formatHH:MM:SS.mmm with zero-padded hours, minutes, seconds and milliseconds
Lap vs splitLap = elapsedAtLap - previousSplit, split = total elapsed. Best and worst lap highlighted
BackgroundPause stores accumulatedMs; resume sets startMs = now. Lap times use elapsedAt call time
RangeUp to 24 hours continuous, tested to browser Date range
Processing location100% client-side JavaScript; nothing uploaded
Usage limitNone - run unlimited sessions, no signup required

Features

⏱️

Millisecond Precision

10 ms refresh with wall-clock elapsed, showing 000-999 ms for exact splits.

🏁

Lap and Split Logging

Log laps with split totals, best lap in green and slowest in red at a glance.

⏸️

Pause and Resume

Pause freezes accumulated time, resume continues from the frozen elapsed without drift.

🔒

Private and Offline

All timing stays in memory; no elapsed data leaves your device.

How to Use the Stopwatch

  1. Click Start to begin - the display ticks in HH:MM:SS.mmm.
  2. While running click Lap to log a split. The table shows lap duration and total split with best/worst highlights.
  3. Click Start again to Pause when showing Pause; click again to resume from the paused elapsed.
  4. Click Reset to stop and clear elapsed and all laps.
  5. Use Copy Time for current elapsed or Copy Laps / Download Report for the full table.

Understanding Stopwatch Timing

A stopwatch measures elapsed wall-clock time from start rather than counting ticks. Computing elapsed = now - start keeps accuracy even when the display interval is throttled in a background tab, unlike incrementing a counter each interval which would drift.

Lap and split

Split is the total elapsed at the moment of the lap press, lap is the gap since the previous split. Coaches use lap for interval pace and split for cumulative time. The fastest lap is highlighted in green, the slowest in red when you have at least two laps.

Pause and resume

Pause adds the running segment to accumulated time and stops the interval. Resume sets a new start timestamp and continues interval ticks. This preserves millisecond accuracy across pauses.

Limitations

Accuracy matches your OS clock, not atomic time, and interval jitter may cause display stutter but not elapsed error. For countdowns use the Countdown Timer and for duration between dates use the Date Difference Calculator.

Privacy and Client-Side Security

Privacy Guarantee: All timing occurs locally inside your browser. Your elapsed times and laps are never transmitted, stored, or recorded on remote servers.

Many online stopwatches send lap data to a server for syncing. TinyToolzz keeps elapsed and laps in page memory only, using Date arithmetic locally.

Because nothing is uploaded, there is no account, no delay, and no history retained. Values disappear when you close the tab or hit Reset.

Frequently Asked Questions

How accurate is the stopwatch?
The stopwatch computes elapsed as Date.now() minus start time, so accuracy matches your OS clock and is not limited by interval throttling. Display refreshes every 10 ms, showing milliseconds 000-999.
Will it keep running if I switch tabs?
Yes, elapsed is wall-clock difference, so background throttling does not cause drift. The display may update less often when hidden but catches up accurately on return.
What is the difference between lap and split?
Split is the total elapsed at the moment you press Lap, lap is the duration since the previous lap. The first lap equals the first split.
Can I copy or download my laps?
Yes, Copy Lap Table copies a tab-separated table of lap numbers, lap times and splits. Download saves the same plus total elapsed as a text report.
Is my timing data sent to a server?
No. All timing uses browser Date and in-memory lap storage locally. No elapsed data is transmitted, stored or logged anywhere.
How do I reset the stopwatch?
Click Reset to stop the timer, clear elapsed to 00:00:00.000 and remove all laps. Start begins fresh from zero.

Related Date & Time Tools

Countdown Timer

Countdown to any date.
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Live UTC and ISO clock.
Date Difference

Days between dates.
Timestamp Converter

Unix to date conversion.
Unix Timestamp

Live Unix time.
Time Zone Converter

Convert between zones.