How to Resize, Crop, and Convert Images Online for Free

Why Online Image Editing Tools Are Essential

Not everyone needs Photoshop. For most everyday image tasks — resizing a photo for social media, cropping a headshot, converting a PNG to JPEG, or compressing an image for email — free online tools are faster, easier, and cost nothing.

Whether you are a blogger, social media manager, small business owner, or just someone who needs to resize a photo, this guide covers everything you need to know.

Every social media platform has different image size requirements. Uploading the wrong size results in awkward cropping, blurry images, or wasted space.

Recommended Image Sizes (2026)

Instagram

Profile photo: 320 x 320 pixels

Square post: 1080 x 1080 pixels

Portrait post: 1080 x 1350 pixels

Story / Reel: 1080 x 1920 pixels

Facebook

Profile photo: 170 x 170 pixels

Cover photo: 820 x 312 pixels

Feed post: 1200 x 630 pixels

Story: 1080 x 1920 pixels

Twitter / X

Profile photo: 400 x 400 pixels

Header: 1500 x 500 pixels

Feed image: 1200 x 675 pixels

LinkedIn

Profile photo: 400 x 400 pixels

Cover image: 1584 x 396 pixels

Feed post: 1200 x 627 pixels

YouTube

Channel icon: 800 x 800 pixels

Channel banner: 2560 x 1440 pixels

Thumbnail: 1280 x 720 pixels

Pinterest

Pin image: 1000 x 1500 pixels

Profile image: 165 x 165 pixels

Resize any image to these exact dimensions with our free Image Resizer. Just upload, enter the dimensions, and download.

How to Crop Images

When to Crop

Remove unwanted background or objects

Focus attention on the subject

Fit a specific aspect ratio for social media or print

Create a square image from a rectangular photo

Common Aspect Ratios

1:1 (Square) - Instagram posts, profile photos

4:3 - Standard photos, presentations

16:9 (Widescreen) - YouTube thumbnails, website banners

9:16 (Vertical) - Stories, Reels, TikTok

3:2 - DSLR camera default, print photos

2:3 - Pinterest pins, portrait prints

Cropping Tips

Follow the rule of thirds — place the subject at intersection points

Leave breathing room around the subject

Consider where the image will be used before cropping

Keep the highest resolution possible after cropping

Use our free Image Cropper to crop images with preset or custom aspect ratios.

How to Convert Between Image Formats

JPEG to PNG

Convert when you need transparency support or lossless quality. JPEG does not support transparent backgrounds, so convert to PNG for logos, icons, and graphics that need to be placed on different colored backgrounds.

PNG to JPEG

Convert when you need a smaller file size and do not need transparency. JPEG files are significantly smaller than PNG for photographs.

Any Format to WebP

WebP offers better compression than both JPEG and PNG while maintaining quality. Convert to WebP for web use to improve page loading speed.

HEIC to JPEG or PNG

iPhones save photos in HEIC format by default. Convert to JPEG or PNG for universal compatibility.

Convert between any image format with our free Image Format Converter.

How to Compress Images Without Losing Quality

Large images slow down websites, take too long to email, and eat up storage space. Compression reduces file size while keeping visual quality intact.

Compression Guidelines by Use Case

Website images - Aim for under 200 KB per image

Email attachments - Keep total attachments under 10 MB

Social media - Platforms compress images anyway, so upload at the recommended dimensions

Print - Keep images at full resolution and at least 300 DPI

Use our free Image Compressor to reduce file sizes with adjustable quality settings.

Other Image Editing Tasks

Flip an Image

Mirror an image horizontally (for selfie correction) or vertically. Use our free Image Flipper.

Rotate an Image

Rotate images by 90, 180, or 270 degrees, or set a custom angle. Use our free Image Rotator.

Apply Filters

Add visual effects like brightness, contrast, saturation, blur, grayscale, and sepia adjustments. Use our free Image Filters.

Extract Colors

Pick colors from an image for your design projects. Use our free Color Picker from Image tool.

Batch Image Processing Tips

If you need to process many images at once:

Decide on your target size and format before starting

Process all images of the same type together

Use consistent naming conventions (product-001.jpg, product-002.jpg)

Keep original files in a separate folder as backup

Verify a sample of processed images before using them all

Complete Image Tool Collection

Here is every free image tool available on Tovlix:

Image Compressor - Reduce file sizes

Image Resizer - Resize to exact dimensions

Image Format Converter - Convert between formats

Image Cropper - Crop with custom ratios

Image Flipper - Mirror images

Image Rotator - Rotate to any angle

Image Filters - Apply visual effects

Image to Base64 - Convert to Base64 for embedding

Base64 to Image - Convert Base64 back to images

JPG to PDF - Convert photos to PDF

PNG to PDF - Convert PNG images to PDF

Conclusion

You do not need expensive software for everyday image editing. Resize, crop, convert, and compress images in seconds using free online tools. Bookmark our Image Resizer, Image Cropper, and Image Compressor for quick access whenever you need them — no downloads, no sign-ups, no watermarks.