Image Optimization Hub

Convert, compress, and resize images for real-world use

Plomz helps you turn raw images into the right resource for where they’re going next: websites, marketplaces, email, social media, print, and design workflows. Choose a tool, upload, and download instantly — no sign-up required.

Start with a tool Read the guides

Built for speed

Fast processing + simple downloads that fit real workflows.

Batch friendly

Convert multiple files and download as a ZIP when available.

Practical outcomes

Smaller files, better compatibility, and fewer upload errors.

Compress images Resize images Convert HEIC Remove background Convert to WebP Convert to AVIF

How Plomz Works

1. Pick a tool based on your goal (compatibility, size, transparency, speed).

2. Upload images (single or batch depending on the tool).

3. Download results instantly — individual files or a ZIP when available.

Best for

• Website performance (Core Web Vitals)
• eCommerce listings & product photos
• Social media assets & thumbnails
• Email attachments & documents
• Design workflows & compatibility fixes

Privacy & retention

No watermark. Files are processed temporarily and deleted automatically after processing. Plomz is built for quick conversions — not for long-term storage.

What Plomz is (and who it’s for)

Plomz is a free image optimization platform trusted by developers, online sellers, designers, and content creators who need fast, practical file processing. If you’ve ever struggled with a platform rejecting an upload, images loading slowly, HEIC files not opening on Windows, or PNG photos being “too heavy” for your website — you’re in the right place.

Instead of treating conversion as “just changing file types,” Plomz focuses on outcomes: smaller files (for speed), better compatibility (for sharing), and cleaner results (for professional publishing). When you pick the right format for the destination, everything works better.

For websites

Use WebP/AVIF for photo delivery, compress to reduce transfer size, and keep PNG only where transparency matters.

For marketplaces

Use JPG for predictable product photos and smaller uploads. Resize to match listing requirements.

For sharing

Convert HEIC to JPG/PNG so files open everywhere, then compress for email and chat apps.

Common workflows (pick one)

Optimize images for faster websites

Reduce load time by converting photos to WebP/AVIF and compressing to the lowest size that still looks sharp. This is one of the fastest ways to improve perceived speed and user experience.

JPG → WebP PNG → WebP JPG → AVIF Compress Read guides for more workflows

Prepare product photos for ecommerce

Resize to consistent dimensions, convert to JPG for predictable uploads, and compress so pages load quickly. The result: fewer upload errors and better looking listings.

Resize PNG → JPG Compress Marketplace tips

Fix HEIC compatibility (iPhone photos)

HEIC is great on Apple devices, but it still causes issues on some Windows apps and upload forms. Convert to JPG for universal compatibility, or PNG when you need transparency.

HEIC → JPG HEIC → PNG HEIC → AVIF HEIC guide

Remove backgrounds for clean designs

Create transparent PNGs for product cutouts, profile pictures, thumbnails, and branding elements. Useful for creators, small businesses, and designers.

Remove Background Transparent WebP Compress Background remover guide

Image tools (convert, resize, compress)

Choose a tool below. Most tools support batch processing and instant downloads. If you’re not sure which format to use, start with WebP for web delivery, JPG for universal compatibility, and PNG for transparency.

PNG → JPG

Convert PNGs to JPG (batch + ZIP)

JPG → PNG

Convert JPGs to PNGs

PDF → JPG

Export PDF pages to JPG images

WebP → PNG

Convert WebP to PNG

Resize

Resize images with optional aspect lock

Compress

Shrink file size with quality control

HEIC → JPG

Convert iPhone HEIC to JPG

HEIC → PNG

Convert HEIC to PNG (supports transparency if present)

PNG → WebP

Make smaller WebP images

JPG → WebP

Convert JPG/JPEG to WebP

JPG → AVIF

High compression AVIF output

Color vectorization (trace)

TIFF → PNG

Convert TIFF images to PNG

GIF → PNG

Convert GIF to PNG (first frame)

Remove Background

Make background transparent (PNG)

JPG → SVG

Convert JPG images to SVG

Tip: If your image is a photo, start with WebP (or AVIF if your workflow supports it). If it’s a logo or UI element, keep it PNG. When you need universal sharing, choose JPG.

Featured guides

Prefer a step-by-step explanation first? These guides explain formats, workflows, and best practices — then link you to the right tool.

Background Removal: Complete Guide

Learn how to remove backgrounds from images for ecommerce, social media, documents, and more. Step-by-step guide with tools, formats, and professional tips.

eBay Image Requirements Guides

Learn eBay’s image requirements for sellers—minimum and recommended sizes, file limits, prohibited edits (text, borders, watermarks), format rules, and practical photo workflows to reduce returns and improve listing performance.

Etsy Image Requirements for Sellers (2026)

A detailed, seller-focused guide to Etsy image requirements—exact pixel sizes for listing photos and shop branding, supported formats, file-size limits, color profile rules, and step-by-step fixes using Plomz tools to resize, convert, and compress for better performance.

Why you need to convert images (PNG, JPG, WebP, AVIF, HEIC)

PNG and JPG are both image formats, but they serve different purposes. PNG is a lossless format built for crisp edges, UI graphics, and screenshots. It also supports transparency (alpha channel), which is perfect for logos and overlays—but that same transparency can create surprises on platforms that flatten backgrounds automatically.

JPG (JPEG), by contrast, is optimized for photographs and gradients using lossy compression to reduce file size. This makes it ideal when you need smaller uploads, faster page loads, easier emailing, or more consistent rendering across platforms.

When should you convert PNG to JPG? Use it when you’re working with photos, portfolio images, blog visuals, product photos, or any content where transparency is not needed and file size matters.

When should you keep PNG? Keep PNG for logos, icons, UI elements, screenshots, line art, and images that require transparency. If your image has hard edges (like text on a flat background), JPG compression can introduce blur and artifacts—PNG keeps edges crisp.

The conversion process is simple and fast: upload or drag-and-drop up to 30 files at a time, download individual outputs or all at once in a ZIP, and repeat as needed.

The conversion is safe and private: your original files remain untouched, and uploaded data is erased after conversion completes.

FAQ (quick answers)

Which format should I use for websites in 2026?

For most websites, use WebP (great all-around) or AVIF (often the smallest for photos). Keep PNG for logos and transparency. Keep JPG when you need universal compatibility.

Why do HEIC photos fail to upload or open on my computer?

HEIC is common on iPhones but isn’t supported everywhere. Convert HEIC → JPG for universal sharing, or HEIC → PNG when you need transparency.

Will compression ruin image quality?

Compression reduces file size. The goal is to lower size while keeping the image visually sharp. For photos, WebP/AVIF often look great at much smaller sizes than PNG.

Is Plomz free?

Yes. Plomz provides free tools for conversion and optimization. If we add premium features later, core tools will remain accessible.

What Are Image Conversion Tools?

Image conversion tools are online or software utilities that let you change an image from one format to another—like PNG → JPG, JPG → WebP, HEIC → PNG, WebP → JPG, BMP → PNG, TIFF → JPG. They take an uploaded image, process it, and return the same visual content in a file format that better matches your goal: smaller size, better compatibility, faster websites, or better editing workflows.

Tool vs Resource (the missing link)
Think of an image converter as a tool you use for a specific action (convert, compress, resize). The output file becomes a resource—something you’ll publish, upload, print, email, or reuse across multiple channels. Great results happen when you choose the right tool based on the resource’s destination.

Why People Use Image Conversion Tools

Improve Website Speed
Smaller images load faster, reduce bounce, and improve user experience. For most sites, switching from heavy PNGs to JPG/WebP (when transparency isn’t required) is one of the quickest performance wins.
Enable Transparency
Converting to PNG or WebP can preserve transparent backgrounds for logos and overlays—useful for branding, thumbnails, and UI elements.
Ensure Compatibility
Not every device or app supports every format (HEIC is a common example on Windows). Converting helps your images work reliably across browsers, phones, desktops, and editing tools.
Prepare Images for Social Media and Marketplaces
Each platform has preferred formats and size limits. Conversion tools help you hit the sweet spot: clear visuals, small files, and fewer upload errors.

In One Sentence
Image conversion tools help you change formats so your images become better “resources” for the real world—faster to load, easier to share, compatible everywhere, and optimized for the platform that matters.

State of Image Formats in 2026

In 2026, image formats are no longer “one-size-fits-all.” Modern sites and apps use different formats depending on where the image will live: a landing page hero, a product listing, a transparent logo, a blog thumbnail, or a downloadable asset. The best format is the one that matches the resource requirements—quality, transparency, decoding support, and file size.

Here’s the practical reality: PNG is still the go-to for transparency and pixel-perfect UI graphics. WebP is a mainstream web format for both photos and transparency with strong compression. AVIF often delivers the smallest files at similar visual quality for photos—but workflows can be more complex, and support can vary by toolchain.

A smart 2026 workflow is usually: PNG for design assets → convert to WebP/AVIF for the web → keep JPG as a universal fallback. If you’re not sure, start with WebP for web delivery and PNG only where transparency is required.

AVIF vs WebP vs PNG (2026 Comparison Table)

Feature	AVIF	WebP	PNG
Best for	Photos, gradients, high-compression delivery	Web images (photos + graphics), modern delivery	Logos, UI, screenshots, transparency-critical assets
Compression	Lossy (and supports lossless)	Lossy + lossless	Lossless
Typical file size	Often smallest for photos	Very small; excellent all-around	Often larger (especially photos)
Transparency	Yes	Yes	Yes (best-known standard)
Edge/text sharpness	Good, but not always ideal for UI text	Good; can replace PNG in many cases	Excellent (best for crisp UI)
Workflow simplicity	Medium (toolchain support varies)	High (widely supported in modern stacks)	High (universal for editing/design)
Recommendation	Use for photo delivery when supported; keep a fallback	Default modern web format for most needs	Use when transparency/precision matters; avoid for photos

Rule of thumb: If it’s a photo, start with WebP (or AVIF). If it’s a logo or UI element, use PNG. If you need universal compatibility for uploads and emails, JPG is still the safe standard.

Choose the Right Tool for the Resource You’re Creating

Website images (speed matters)
Convert photos to WebP/AVIF. Keep PNG only for transparency assets. Compress to reduce transfer size.
Marketplace listings (predictability matters)
Use JPG for product photos and clean backgrounds. Avoid transparency unless the platform supports it well.
Logos and overlays (transparency matters)
Use PNG or WebP with transparency. Test on light and dark backgrounds to avoid halos.
Email attachments (size limits matter)
Convert PNG photos to JPG and compress. ZIP batches when sending multiple images.

If you treat every conversion as “just changing file types,” you’ll get inconsistent results. If you treat it as creating the best possible resource for a destination, you’ll choose formats that load faster, look cleaner, and upload without issues.