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How to Use ImageFlow Tools

Step-by-step tutorials for every tool. Learn what each tool does, how to use it, and when to use it — with tips from our team.

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🧩 Merge PDF✂️ Split PDF🗜️ Compress PDF🔁 Rotate PDF📐 Crop PDF💧 Watermark PDF✍️ Sign PDF🔍 Image Upscaler📦 Bulk Format Convert🪪 Passport Photo Maker🗜️ Compress Image📐 Resize Image✂️ Crop Image🔄 JPG to PNG⚙️ Convert Format📦 Bulk Compressor📄 Image to PDF
🧩

Merge PDF

Combine multiple PDFs into one

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What It Does

Merge two or more PDF files into a single document while preserving page quality and order.

Step-by-Step

1

Upload multiple PDFs

2

Reorder using Up/Down buttons

3

Click Merge PDFs

4

Download merged file

💡 Pro Tips

Place the final cover document first
Rotate pages before merge if needed

Best For

InvoicesMulti-part applicationsScanning bundles
✂️

Split PDF

Extract specific pages

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What It Does

Create a new PDF from selected pages using ranges like 1-3,5,7.

Step-by-Step

1

Upload PDF

2

Enter pages/ranges

3

Click Extract pages

4

Download split PDF

💡 Pro Tips

Use commas for multiple ranges
Invalid page numbers are ignored

Best For

Share selected sectionsArchive key pages
🗜️

Compress PDF

Reduce PDF size

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What It Does

Compress scanned/image-heavy PDFs with adjustable quality and render scale.

Step-by-Step

1

Upload PDF

2

Set quality and scale

3

Click Compress PDF

4

Download result

💡 Pro Tips

Lower quality = smaller file
Higher scale preserves readability

Best For

Email attachmentsPortal upload limits
🔁

Rotate PDF

Rotate all or one page

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What It Does

Rotate PDF pages by 90°, 180°, or 270°.

Step-by-Step

1

Upload PDF

2

Choose All pages or Current page

3

Pick angle

4

Rotate and download

💡 Pro Tips

Use Current page for one bad scan

Best For

Fix sideways scansPrepare print-ready docs
📐

Crop PDF

Crop with draggable selector

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What It Does

Trim margins with an interactive, resizable selection box and apply to all/current pages.

Step-by-Step

1

Upload PDF

2

Drag/resize crop area

3

Choose apply mode

4

Crop and download

💡 Pro Tips

Reset selection to start over quickly

Best For

Remove bordersFocus on content blocks
💧

Watermark PDF

Add text watermark

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What It Does

Apply watermark text with size, opacity, and rotation controls.

Step-by-Step

1

Upload PDF

2

Enter text

3

Adjust controls

4

Apply and download

💡 Pro Tips

Use 20–35% opacity for subtle marks

Best For

Draft markConfidential docsBranding
✍️

Sign PDF

Draw and place signature

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What It Does

Draw your signature and place it on current/all pages.

Step-by-Step

1

Upload PDF

2

Draw signature

3

Choose page mode and position

4

Apply and download

💡 Pro Tips

Use current page for standard approvals

Best For

AgreementsFormsApprovals
🔍

Image Upscaler

Upscale 2x/4x

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What It Does

Increase image dimensions using high-quality in-browser resampling.

Step-by-Step

1

Upload image

2

Choose 2x or 4x

3

Upscale

4

Download PNG

💡 Pro Tips

4x can create large files

Best For

BannersPrint drafts
📦

Bulk Format Convert

Batch convert with ZIP output

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What It Does

Convert many images to WebP/JPG/PNG in one run.

Step-by-Step

1

Upload multiple files

2

Choose output format

3

Convert

4

Download ZIP

💡 Pro Tips

Use WebP for smaller web assets

Best For

Ecommerce assetsBlog image pipelines
🪪

Passport Photo Maker

Country preset passport photos

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What It Does

Generate passport-size photos using fixed country presets.

Step-by-Step

1

Upload face photo

2

Choose preset

3

Adjust zoom/position

4

Generate and download

💡 Pro Tips

Plain backgrounds give best output

Best For

PassportVisaID forms
🗜️

Compress Image

Reduce file size while keeping quality

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What It Does

Image compression reduces the file size of your photos by removing unnecessary data. Our tool uses browser-native canvas compression to shrink JPEG, PNG, and WebP images without visible quality loss.

Step-by-Step

1

Click "Choose File" or drag your image into the upload area

2

Adjust the Quality slider — lower = smaller file, higher = better quality

3

Choose output format (JPEG for photos, PNG for transparency, WebP for web)

4

Click "Compress" to process your image

5

Preview the before/after and download your compressed image

💡 Pro Tips

80% quality is usually a sweet spot for photos
Use WebP for web — it's 30% smaller than JPEG with the same quality
PNG is lossless — quality slider doesn't apply

Best For

Website speed optimizationEmail attachmentsSocial media uploadsReducing storage usage
📐

Resize Image

Change image dimensions precisely

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What It Does

Resize images to exact pixel dimensions or by a percentage. Supports aspect ratio locking and social media presets like Instagram, Twitter, and YouTube thumbnails.

Step-by-Step

1

Upload your image

2

Choose resize mode: by pixels, percentage, or social preset

3

Enter your target width (height auto-adjusts if aspect ratio is locked)

4

Optionally unlock aspect ratio to set custom width and height independently

5

Click "Resize" and download your result

💡 Pro Tips

Lock aspect ratio to prevent image distortion
Use presets for social media to get perfect sizes every time
Percentage mode is great for making images consistently smaller

Best For

Profile photosSocial media postsWebsite bannersEmail signatures
✂️

Crop Image

Cut out any part of your image

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What It Does

Crop images by dragging a selection box over the area you want to keep. Supports free-form cropping and locked aspect ratios (1:1, 4:3, 16:9, 9:16).

Step-by-Step

1

Upload your image — it will appear in the crop view

2

The crop box appears automatically. Drag the box to move it

3

Drag any corner handle to resize the selection area

4

Use rule-of-thirds gridlines as a composition guide

5

Optionally select an aspect ratio preset (1:1, 16:9, etc.)

6

Click "Crop Image" to apply and download

💡 Pro Tips

1:1 is perfect for profile pictures
16:9 is standard for YouTube thumbnails
9:16 is ideal for Instagram Stories and TikTok

Best For

Removing backgrounds/bordersCreating profile picturesPreparing thumbnailsComposing better shots
🔄

JPG to PNG

Convert JPEG images to transparent PNG

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What It Does

Convert JPEG images to PNG format. PNG supports transparency (alpha channel) while JPEG does not. Use this when you need a transparent background or lossless quality.

Step-by-Step

1

Drop or select your JPEG/JPG file

2

The tool automatically converts to PNG in your browser

3

Click "Convert to PNG" to process

4

Download your PNG file

💡 Pro Tips

PNG files will be larger than JPEG — that's normal (PNG is lossless)
To add transparency after conversion, use a background remover tool
Use PNG for logos, icons, and illustrations that need crisp edges

Best For

Logos and brandingScreenshotsImages needing transparencyDesign assets
⚙️

Convert Format

Convert between JPEG, PNG, WebP, and BMP

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What It Does

Convert any image to JPEG, PNG, WebP, or BMP format. Choose your output format, adjust quality if needed, and download the result instantly.

Step-by-Step

1

Upload any image (JPEG, PNG, WebP, BMP, GIF)

2

Select your target format from the format pills (JPEG, PNG, WebP, BMP)

3

Adjust quality for lossy formats (JPEG, WebP)

4

Click "Convert" and download

💡 Pro Tips

WebP is the best format for websites — smallest file size with great quality
JPEG is universal — works everywhere
Use PNG when you need transparency or exact color fidelity

Best For

Web optimizationCross-platform compatibilityFormat standardizationDesign workflow
📦

Bulk Compressor

Compress multiple images at once

Try it →

What It Does

Compress dozens of images in a single batch operation. All images are downloaded as a ZIP file. Saves hours compared to processing one by one.

Step-by-Step

1

Drag multiple images into the upload area, or click to select multiple files

2

Use Ctrl/Cmd+Click or Shift+Click to select multiple files at once

3

Set quality and output format for all images

4

Click "Compress All" to process the batch

5

Wait for the progress bar to complete

6

Click "Download ZIP" to get all compressed images in one file

💡 Pro Tips

Select files in your file manager with Ctrl+A to select all
You can mix JPEG and PNG files in one batch
Use WebP output for the smallest possible web-ready files

Best For

Website asset optimizationPhoto library managementEmail newsletter imagesE-commerce product photos
📄

Image to PDF

Combine images into a PDF document

Try it →

What It Does

Convert one or more images into a PDF document. Perfect for creating photo portfolios, document scans, or multi-page presentations.

Step-by-Step

1

Upload one or more images

2

Reorder pages by dragging if needed

3

Choose page size (A4, Letter, etc.) and orientation

4

Adjust image fitting (fill page or fit with margins)

5

Click "Convert to PDF" and download your PDF

💡 Pro Tips

Images are added in the order you upload them
Use portrait orientation for documents, landscape for photos
Higher quality settings produce a larger but crisper PDF

Best For

Document scanningPhoto portfoliosInvoice creationSlide decks from images

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