Guides, tips & tutorials
Every tool on Evoke AI has a written guide, so there are 72 of them here. Each one covers the same three things: what the tool actually does to your file, the exact steps to use it, and the questions people ask before they trust it with a document or photo.
These are reference pages rather than articles. If you already know which tool you need, go straight to it and skip the reading. If you are deciding between two approaches — whether to compress or resize an image, whether to split a PDF or organize its pages, whether a scan needs repairing before enhancing — the guide explains the difference and when each one is the right call.
Most tools run entirely in your browser, so the guides also state plainly which steps happen on your own device and which need to call an AI service. Use the categories below to browse by file type, use the search box, or pick a tag to narrow further.
How to Compress a Photo to Exactly 20KB or 100KB (For Forms, Exams & Job Portals)
Need to compress image to 20kb or 100kb for a form, exam, or passport photo? Here's the exact 4-step process that actually hits the target size.
Read article →Why Won't My iPhone Photos Open on Windows? (HEIC Explained)
iPhone photos won't open on Windows? Here's why HEIC causes it, whether HEIC to JPG loses quality, and the fastest fix — no software needed.
How to Fix a Sideways or Badly Cropped Photo
Crop, rotate, and flip any photo online free. Fix sideways uploads, straighten tilted shots, and set exact aspect ratios. No software needed.
Organize PDF Online — Reorder, Rotate & Delete Pages Free
Drag pages into a new order, rotate scans that came out sideways, and delete the blank separator sheets a document feeder always adds. All inside one existing PDF.
How to Choose an Image Converter You Can Trust
Which image format to pick, and why. A decision guide covering JPG, PNG, WEBP, SVG, and PDF — what each one is good at, what it throws away, and which conversions lose quality permanently.
Why Your Photo Looks Blurry After Resizing (and How to Fix It)
Learn why photos turn blurry after resizing, the real cause (not what you think), and how to enlarge or shrink images without losing quality.
What Happens to Bookmarks and Form Fields When You Merge PDFs
Combine several PDFs into one document in the order you choose. Pages are copied across as they are, so a mix of A4 and letter pages keeps its own dimensions instead of being resized.
Split PDF Online — Extract Pages Into Separate Files Free
Pull pages 3 to 7 out of a 40-page scan, or break a bound document into one file per page. Page content is copied across untouched, so nothing is re-compressed on the way out.
Rotate PDF Online — Fix Sideways or Upside-Down Pages Free
Turn a sideways or upside-down scan the right way up, one page or the whole file. The rotation is saved into the document, so it stays fixed for whoever opens it next.
Which PDF Watermark Actually Stops Reuse?
Stamp Draft, Confidential, or a logo across every page of a PDF. Covers picking an opacity that stays visible without making the text underneath hard to read.
Where Should Page Numbers Go? Formatting Rules That Matter
Number the pages of a PDF, with control over position, format, and which number the count starts on — useful when a cover page should not count as page one.
PDF to JPG Converter Online — Turn Pages Into Images Free
Render PDF pages as JPG images, one page or all of them. Includes the trade-off that matters most here: the output is a picture, so the text inside it stops being selectable.
Free Background Remover Online — Cut Out Any Photo in Seconds
Cut a subject out of its background and get a transparent PNG. Includes why hair, fur, and glass edges are the hard cases, and how to shoot around them.
How to Write a Prompt That Actually Edits Your Photo
Type the change you want instead of learning masks and layers. Includes how to phrase a prompt so the edit lands where you meant it to, which is most of the skill involved.
Free AI Image Generator Online — Turn Text Into Images
Describe a picture and get it back as an image. Covers how to write a prompt that specifies subject, setting, lighting, and style — the four things that actually change the output.
How Much Can You Really Upscale a Low-Res Photo?
Upscale a low-resolution photo and clean up noise and softness. Best results come from a small but reasonably clean source — enlarging a heavily compressed thumbnail has limits worth knowing first.
Why Colorized Old Photos Are Never the True Original Colors
Add color to a black-and-white photo. The AI predicts plausible tones for skin, sky, and fabric — it cannot know the real color of a dress from 1954, which is worth remembering with family photos.
Repair Scratched Photos Before You Enhance Them
Remove scratches, dust, creases, and tears from a scanned print. Run this before enhancing or colorizing, so damage does not get sharpened into a permanent part of the image.
What an Unblur Photo App Can and Cannot Recover
Sharpen a shaky, out-of-focus, or motion-blurred photo. Worth knowing before you start: the AI rebuilds plausible detail rather than recovering what the lens never captured, so results are best on mild blur.
Why an AI Portrait Is Not a Photograph of You
Turn an everyday selfie into a studio-style headshot or artistic avatar. The guide also covers the part most tools skip: how closely the generated face still resembles you, and when that matters.
When Style Transfer Looks Like Art and When It Smears
Repaint a photo in the style of a painting, sketch, or art movement. Composition stays put while brushwork, palette, and texture are replaced — which is why some photos suit it far better than others.
Image to PDF Converter Online — Combine Photos Into a PDF Free
Combine photos into one PDF with a set page size and margins — the usual way to turn a stack of phone-camera document shots into something an office will accept.
How to Compress a PDF to Meet an Upload Size Limit
Use a PDF compressor to shrink large files fast. Free, safe, and no quality loss. Compress PDFs to 100KB, 1MB, or any size in seconds.
PNG to SVG Converter Online — Turn Images Into Vectors Free
Trace a PNG logo, icon, or piece of line art into vector paths that stay sharp at any size. Works on flat graphics with clear edges — not on photographs, and this explains why.
SVG to PNG Converter Online — Rasterize Vectors Free
Turn a scalable SVG into a fixed-size PNG at whatever dimensions you need — 512x512 for an app icon, or double your display size so the logo stays crisp on a retina screen.
Why Your Video File Is So Large (and How to Shrink It)
Compress video online free and fast. Reduce file size for Discord, WhatsApp, or email. No watermark, no quality loss, no install.
Profile Picture Sizes for WhatsApp, Instagram and Facebook
Make a WhatsApp, Instagram, or Facebook DP online free. Fit your full photo with no cropping. Sharp, centered, ready in seconds.
Free Collage Maker Online — Combine Photos Into One Grid
Arrange two to six photos into one image on a grid. Includes which layouts hold up when the collage is viewed as a small thumbnail, which is where most collages actually get seen.
US Passport Photo Rules: 2x2 Size, Background and Rejections
Make a compliant passport photo online free. Get the right size, background, and format in seconds. No appointment, no editing software needed.
ID Card Photo Rules: Sizes, Background and Rejections
Crop a normal photo to the head-and-shoulders framing an ID badge needs, on a plain background. Covers what school, workplace, and licence photos each expect before you submit one.
How to Watermark Photos So They Cannot Be Cropped Out
Watermark image online in seconds. Add text or logo, adjust opacity, and download free. No signup, no software, no watermark on the export.
Why PDF to Word Conversion Breaks Your Layout
Turn a PDF into an editable Word (.docx) file right in your browser. Extract text from every page, download instantly, and open it in Word or Google Docs — private, free, no install.
How to Keep Fonts and Layout Intact in a PDF Export
Turn a Word (.docx) file into a PDF that keeps its headings, lists, and images exactly where you put them — so the layout stops shifting between the machine you wrote it on and the one that opens it.
Image to GIF Maker Online — Create Animated GIFs Free
Turn a set of photos into a looping animated GIF. Covers frame delay, sizing, and the 256-colour limit that makes GIFs look banded if you feed them the wrong kind of image.
Markdown to PDF Converter Online — MD to PDF Free
Turn a Markdown (.md) file into an A4 PDF with headings, lists, quotes, and fenced code blocks intact — useful for turning a README or set of notes into something printable.
Is a Drawn Signature on a PDF Legally Valid?
Add a drawn, typed, or uploaded signature to any PDF. Place it on the right page, resize it, and export a signed file — free with Evoke AI on mobile, with no print-and-scan hassle.
PDF to PowerPoint Free — Convert PDF to PPTX Slides
Turn PDF pages into editable PowerPoint slides you can present and revise. Convert in the Evoke AI app without rebuilding every slide from scratch.
PDF to Text Free — Extract Text from Any PDF
Pull clean plain text out of a PDF for copying, searching, and rewriting. Extract with Evoke AI when you need the words without the fixed layout.
PDF to HTML Free — Convert PDF to Web Pages
Turn a PDF into HTML you can open in a browser or adapt for a website. Convert with Evoke AI when document content needs to live on the web.
PDF to PNG Free — Convert PDF Pages to PNG Images
Export every PDF page as a crisp PNG for slides, web, and design. Convert with Evoke AI when you need transparent-friendly page images.
PDF to SVG Free — Convert PDF to Scalable Vector Graphics
Turn PDF pages into SVG files that stay sharp at any size. Convert with Evoke AI for logos, diagrams, and scalable page art.
Excel to PDF Free — Convert Spreadsheets to PDF
Turn Excel sheets into a polished PDF for sharing and printing. Convert with Evoke AI when a workbook needs a fixed, professional layout.
PowerPoint to PDF Free — Convert PPTX to PDF
Turn a PowerPoint deck into a PDF that looks the same on every device. Convert with Evoke AI for easy sharing and print-ready slides.
Turning Plain Text into a Readable PDF: Fonts, Margins and Line Breaks
Turn a plain text file into a clean, shareable PDF. Convert notes, logs, and drafts with Evoke AI without opening a full word processor.
HTML to PDF Free — Convert Web Pages to PDF
Save HTML content as a PDF for offline reading, archiving, or print. Convert with Evoke AI when a web-style page needs a fixed document.
PDF Passwords Explained: Owner vs User Permissions
Lock a PDF with a password before you share it, or unlock a protected file when you know the password. Do both privately in your browser with Evoke AI.
Why Table Extraction from PDFs Goes Wrong
Turn PDF text and tables into an editable Excel workbook. Convert with Evoke AI when you need numbers in cells instead of a locked page.
HEIC to JPG Free — Convert iPhone Photos Online
Turn HEIC and HEIF photos from iPhone into JPG files that open everywhere. Convert privately in your browser with Evoke AI.
Free QR Code Generator — Text, Image & Logo Options
Create a PNG QR code from text, a URL, or a compressed image. Choose with logo or without logo, then download free in your browser — no signup.
Free QR Code Reader — Scan QR Codes Online
Decode a QR code with your camera or by uploading a photo. Read links and text privately in your browser with Evoke AI — no signup.
How ZIP Password Protection Actually Works
Lock and unlock ZIP files online for free. Password protect a ZIP or remove its password in seconds. No signup, no software, works on any device.
Why Some Files Barely Shrink When You ZIP Them
Free online ZIP compressor. Compress files and folders into a smaller ZIP in seconds. No signup, no upload, your files stay private in your browser.
Free Video Converter Online — MP4, WebM, GIF, MP3 & WAV
Convert any video to MP4, WebM, GIF, MP3, or WAV right in your browser. No upload, no account, no watermark — the file never leaves your device.
Trim Video Online Free — Cut MP4, MOV & WebM in Your Browser
Cut the start, end, or middle out of any video by dragging on a visual timeline. Private, free, and fully on-device with no upload or watermark.
How to Merge Videos Without Losing Quality
Join two or more video clips into one MP4 in the order you choose. Fully private and on-device, with no upload, account, or watermark.
MP3 or WAV? Choosing a Format When You Extract Audio
Pull the soundtrack out of any video and save it as MP3 or WAV. Runs entirely in your browser with no upload, account, or watermark.
How to Remove Audio from a Video Without Re-Encoding
Strip the sound out of a video and keep the picture crisp. Fast, private, and fully on-device with no upload, account, or watermark.
Video Resolution and Frame Rate Explained
Scale a video to 1080p, 720p, or 480p and pick 24, 30, or 60 fps. Rescaling on your own hardware with no upload, account, or watermark.
How to Make a GIF from a Video Without a Huge File
Turn a chosen part of any video into a smooth looping GIF. Pick the clip on a visual timeline and export privately in your browser.
Why Your Phone Video Is Sideways (and How to Fix It)
Rotate a video 90 degrees either way or flip it horizontally or vertically, with a live preview. Private and on-device, no upload or watermark.
Which Video Aspect Ratio Should You Use?
Center-crop any video to the aspect ratio a platform expects, from widescreen to vertical Reels. Private, on-device, no upload or watermark.
How to Speed Up or Slow Down a Video Smoothly
Slow a video to 0.5× or speed it up to 2× while keeping the audio in sync. Where the speed change happens with no upload or watermark.
Where to Place a Video Watermark So It Survives Reposting
Overlay a logo or text watermark on your video and drag it anywhere on the preview. Private, on-device, with no upload, account, or watermark from us.
How to Split a Long Video into Shareable Parts
Divide a long video into two to five equal clips, preview each part, and download them together in a ZIP. Private and on-device, no upload.
How to Reverse a Video (and What Happens to the Audio)
Play a video and its audio backwards for a fun or surreal effect. Private and on-device, with no upload, account, or watermark.
How to Grab a Sharp Still Frame from a Video
Pick an exact moment on a visual timeline and save it as a high-quality JPG, or grab several evenly spaced frames at once. Private and on-device.
Evoke AI vs iLovePDF: Which Free PDF Tool Should You Use?
Both handle merging, splitting, and compressing PDFs for free. The real difference is where your file is processed: Evoke works inside your browser, iLovePDF uploads to a server.
Evoke AI vs Smallpdf: Free PDF Tools Without the Task Limit
Smallpdf caps how many free tasks you get per day. Evoke AI runs in your browser with no daily counter, no signup, and no file upload. Here is the honest comparison.
Evoke AI vs Remini: Free Photo Enhancer Compared
Remini is a paid mobile app with a limited free trial. Evoke AI enhances, restores, colorizes, and deblurs photos in the browser for free, with no credits to buy.
Free Barcode Generator — Create UPC, EAN & Code 128
Create a PNG barcode from a SKU, product number, or text. Choose UPC, EAN, Code 128, or Code 39, preview instantly, and download free in your browser — no signup.
Free Barcode Reader — Scan Barcodes Online
Decode a barcode with your camera or by uploading a photo. Read UPC, EAN, Code 128, and more privately in your browser with Evoke AI — no signup.
PNG to HEIC Free — Convert Images to HEIC Online
Turn PNG or JPG photos into HEIC stills that sit next to iPhone camera rolls. Convert privately in your browser with Evoke AI.
Browse guides by category
Every guide, grouped by the kind of file it works on.
Comparisons (3)
Honest side-by-side breakdowns against the tools people usually compare us with.
PDF guides (24)
Merge, split, compress, sign, protect, and convert PDF documents.
- Organize PDF Online — Reorder, Rotate & Delete Pages Free
- What Happens to Bookmarks and Form Fields When You Merge PDFs
- Split PDF Online — Extract Pages Into Separate Files Free
- Rotate PDF Online — Fix Sideways or Upside-Down Pages Free
- Which PDF Watermark Actually Stops Reuse?
- Where Should Page Numbers Go? Formatting Rules That Matter
- PDF to JPG Converter Online — Turn Pages Into Images Free
- Image to PDF Converter Online — Combine Photos Into a PDF Free
- How to Compress a PDF to Meet an Upload Size Limit
- Why PDF to Word Conversion Breaks Your Layout
- How to Keep Fonts and Layout Intact in a PDF Export
- Markdown to PDF Converter Online — MD to PDF Free
- Is a Drawn Signature on a PDF Legally Valid?
- PDF to PowerPoint Free — Convert PDF to PPTX Slides
- PDF to Text Free — Extract Text from Any PDF
- PDF to HTML Free — Convert PDF to Web Pages
- PDF to PNG Free — Convert PDF Pages to PNG Images
- PDF to SVG Free — Convert PDF to Scalable Vector Graphics
- Excel to PDF Free — Convert Spreadsheets to PDF
- PowerPoint to PDF Free — Convert PPTX to PDF
- Turning Plain Text into a Readable PDF: Fonts, Margins and Line Breaks
- HTML to PDF Free — Convert Web Pages to PDF
- PDF Passwords Explained: Owner vs User Permissions
- Why Table Extraction from PDFs Goes Wrong
AI photo guides (18)
Restore, colorize, deblur, upscale, and generate images with AI.
- How to Compress a Photo to Exactly 20KB or 100KB (For Forms, Exams & Job Portals)
- Why Won't My iPhone Photos Open on Windows? (HEIC Explained)
- How to Fix a Sideways or Badly Cropped Photo
- Why Your Photo Looks Blurry After Resizing (and How to Fix It)
- Free Background Remover Online — Cut Out Any Photo in Seconds
- How to Write a Prompt That Actually Edits Your Photo
- Free AI Image Generator Online — Turn Text Into Images
- How Much Can You Really Upscale a Low-Res Photo?
- Why Colorized Old Photos Are Never the True Original Colors
- Repair Scratched Photos Before You Enhance Them
- What an Unblur Photo App Can and Cannot Recover
- Why an AI Portrait Is Not a Photograph of You
- When Style Transfer Looks Like Art and When It Smears
- Free Collage Maker Online — Combine Photos Into One Grid
- US Passport Photo Rules: 2x2 Size, Background and Rejections
- ID Card Photo Rules: Sizes, Background and Rejections
- HEIC to JPG Free — Convert iPhone Photos Online
- PNG to HEIC Free — Convert Images to HEIC Online
Video guides (16)
Trim, merge, compress, crop, and convert video clips in the browser.
- Why Your Video File Is So Large (and How to Shrink It)
- Image to GIF Maker Online — Create Animated GIFs Free
- Free Video Converter Online — MP4, WebM, GIF, MP3 & WAV
- Trim Video Online Free — Cut MP4, MOV & WebM in Your Browser
- How to Merge Videos Without Losing Quality
- MP3 or WAV? Choosing a Format When You Extract Audio
- How to Remove Audio from a Video Without Re-Encoding
- Video Resolution and Frame Rate Explained
- How to Make a GIF from a Video Without a Huge File
- Why Your Phone Video Is Sideways (and How to Fix It)
- Which Video Aspect Ratio Should You Use?
- How to Speed Up or Slow Down a Video Smoothly
- Where to Place a Video Watermark So It Survives Reposting
- How to Split a Long Video into Shareable Parts
- How to Reverse a Video (and What Happens to the Audio)
- How to Grab a Sharp Still Frame from a Video
Image guides (5)
Resize, convert, compress, crop, and watermark images.
Create & utilities (6)
Collages, profile pictures, passport photos, QR codes, barcodes, and ZIP archives.