Kroma Lab

Blog

Guides on image compression, file formats, and what's hiding in your photos.

Laptop screen showing photo editing software in a bright workspace

How to Resize a Photo Without Stretching or Distorting It

Squished faces, stretched logos, warped proportions — here's why resizing distorts a photo, and the three ways to avoid it.

Hands holding a smartphone with the Instagram app open

Does Instagram Remove EXIF Data? What About Facebook and X?

Does Instagram remove EXIF data when you post? Here's what's publicly documented about Instagram, Facebook, and X's metadata handling, and why you shouldn't rely on it.

Woman retouching photos on a laptop at a home desk

Best Free Image Compressors With No Sign-Up Required

Don't want to create an account just to shrink a photo? Here are the best free image compressors that work without signing up.

Fingers inserting a USB drive into a laptop's port

Kroma Lab: A CloudConvert Alternative for Photos Only

CloudConvert converts 200+ file types through a server-side API. For a single photo, here's when that's overkill and when Kroma Lab is the simpler choice.

Blue passports stacked closely together on a flat surface

Passport Photo Size Requirements: What Size To Use

Passport and visa photo uploads usually cap file size well below a normal phone photo. Here's how to get yours to the right size without losing quality.

Laptop screen showing lines of programming code

WebP vs. PNG vs. JPEG: Which Format for Your Website?

WebP vs PNG vs JPEG, compared for real website use — file size, quality, transparency support, and which one to pick for which situation.

Hand holding a black iPhone outdoors

HEIC vs. JPEG: The Real Difference, and Which to Use

HEIC vs JPEG, explained simply: what's actually different, why iPhones default to HEIC, and when you should convert to JPEG instead.

Open laptop displaying code on a wooden desk

AVIF vs. WebP: Is It Actually Worth Switching in 2026?

AVIF vs WebP: how much smaller AVIF actually is, what it costs you in encode time and support, and whether switching is worth it for your site.

Person using a laptop indoors beside a potted plant

Why Won't My HEIC Photo Attach to This Email or Form?

HEIC photo won't attach or upload? Here's why, and the fastest way to convert it so it works on the first try.

Person holding an iPhone while seated at a desk with a computer

Why Won't My iPhone Photos Open on Windows? (HEIC Explained)

iPhone photos showing as broken files or blank thumbnails on your PC? Here's why HEIC causes it, and how to fix it in seconds.

Rows of server racks and cables in a data center corridor

The Hidden Cost of 'Free' Online Photo Tools: What Happens to Your Uploads?

Free online photo tools need to process your file somehow. Here's what 'upload, process, delete' actually means, and the questions worth asking before you use one.

Close-up of a DSLR camera's mode dial with setting icons

JPEG Quality Settings Explained: What '80%' Actually Means

JPEG quality settings explained in plain English — what the percentage actually controls, and what setting to use for different situations.

Photographer taking pictures outdoors in a lush green setting

A Photographer's Guide to EXIF: Keep This, Strip That

Not all EXIF data is worth removing. This photographer's guide to EXIF covers what's genuinely useful to keep, and what to strip before publishing.

Flat lay of a vintage camera with memory cards and lens cap

Complete Guide to Image Formats: JPEG, PNG, WebP, AVIF, HEIC

A plain-English image format comparison guide covering JPEG, PNG, WebP, AVIF, and HEIC — what each is for, and how to convert between them.

Close-up of hands typing code on a laptop keyboard

How We Built Image Processing in the Browser (No Server)

How Kroma Lab compresses, converts, and reads photo metadata entirely in the browser — WASM codecs, web workers, and no upload endpoint at all.

Laptop displaying photo editing software on a clean desk

Kroma Lab: The TinyPNG Alternative That Skips Uploads

TinyPNG is a great compressor with a much bigger product line. Kroma Lab does compression, conversion, and metadata cleanup without uploading your file. Here's the real comparison.

Cracked laptop screen showing colorful pixelated distortion

Why Does a Compressed Image Look Blurry? The Real Reason

Compression doesn't have to mean blurry. Here's what actually causes visible quality loss, and how to compress a photo without it happening.

Close-up of a hand holding a silver iPhone showing an app

How to Tell If a Photo Was Taken With an iPhone or Not

Curious what device shot a photo? Here's how to tell if a photo was taken with an iPhone (or anything else) using the file's own hidden data.

Resume on a clipboard beside a pen and open laptop

How to Compress a Photo for a Job Application, Fast

Job portal rejecting your photo for being too large? Here's how to get it under the limit in seconds, without visible quality loss.

White house with a red and white Home for Sale sign on the lawn

Remove Metadata From Real Estate Photos Before You List Them

Listing photos carry hidden metadata by default, including precise GPS. Here's why real estate agents should strip it before publishing, and how.

Laptop screen displaying cybersecurity related text

Best Tools to Remove GPS and EXIF Data From Photos in 2026

A practical rundown of the best tools to remove GPS and EXIF data from photos in 2026 — from one-click browser tools to power-user options.

Laptop and smartphone side by side on a white desk

Best Free HEIC to JPG Converters You Can Try in 2026

A rundown of the best free HEIC to JPG converters in 2026 — which ones upload your photo, which run locally, and which is right for your situation.

Person coding on a laptop with HTML code on the screen

Kroma Lab: A Squoosh Alternative With Guided Compression

Squoosh and Kroma Lab both process images entirely in your browser. Here's how they actually differ — format support, metadata tools, and who each is for.

Hand holding a smartphone showing a GPS map inside a car

Does Posting a Photo Online Reveal Your Exact Location?

Many photos carry the exact GPS coordinates of where they were taken. Here's how to check yours, and how to remove it before you post.

Close-up of a camera lens held in a hand

What Is EXIF Data and Why Does Every Photo Have It?

What is EXIF data, exactly? A plain-English explainer on the hidden information embedded in nearly every photo you take, and how to check yours.

Close-up of an iPhone screen displaying a lake photo

How to Stop Your iPhone From Taking HEIC Photos, For Good

Tired of converting HEIC photos one by one? Here's how to stop your iPhone from taking HEIC photos in the first place, in under a minute.

Close-up of a smartphone screen showing messaging app icons

WhatsApp Image Size Limit and How to Work Around It

WhatsApp compresses photos hard by default. Here's the WhatsApp image size limit, why your photos look worse after sending, and how to control it.

Woman photographing shoes for an online listing at home

Before You Sell Online, Remove This From Your Photos

Selling something online? Your product photos may carry your home address in hidden metadata. Here's how to check and remove it before listing.

Monochrome desk with a camera, lens, laptop, and tablet

Kroma Lab: An iLoveIMG Alternative With No Upload Step

iLoveIMG offers a huge toolset but uploads your files to process them. Here's how it compares to Kroma Lab's browser-only approach.

Laptop screen displaying photo editing software with images

How Much Can You Compress a Photo Before It Looks Bad?

A practical breakdown of what happens at each compression level, so you know how far you can push a file size target before quality visibly suffers.

Smartphone home screen displaying rows of social media app icons

Social Media Image Size Requirements: The Full Cheat Sheet

Instagram, LinkedIn, X, and email attachment limits, all in one place — plus how to get any photo under the right one in seconds.