Product concepts
Render a hand-drawn object as plastic, metal, fabric or glass without losing the proportions that make the concept yours. It is useful for exploring finishes before committing to CAD or a studio render.
Free · No sign up for your first image
Free Sketch to Image AI
Change what you want. Keep what matters.
Upload a sketch or line drawing and render it photorealistic — the outline, proportions and layout stay exactly as drawn. First render free, no account.
No sign up
No watermark
Auto-delete in 24h
Never used for training
1Upload image
2Choose change
3Generate
Step 1 · Add your image
Drop your image here
Drag & drop, paste, or choose from your device
Upload image
JPGPNGWebP≤ 10 MB
Private · auto-deleted in 24h
No photo handy? Try a sample
What do you want to change?
Pick one direction. Keepframe will protect the important parts automatically.
We’ll detect what matters after you upload, then protect it automatically.
2 Choose one you can refine it below
Advanced settings Optional
Detected mode after upload
Keep protected recommended for this image
Change strength
Balanced — clear change, identity and layout stay stable.
Aspect ratio
✦ 1 free result as a guest · failed generations never count
Real before & after
From rough line art to finished renders — without redrawing the idea
Compare the source sketch with the result. The silhouette, proportions and camera view stay anchored while material, color and light are rendered.
The control other tools hide
You don't pick a model. You pick what survives.
Most img2img tools give you one abstract “strength” slider. We turn it into decisions a human actually makes.
Keep — hard constraints
Locked items become model routing, region masks and post-composition — not just a sentence in the prompt.
- Face — it's still the same person. Identity reference plus face-region protection.
- Subject — the product, pet or object keeps its shape, logo and key details.
- Composition — pose and layout stay put via structure and depth control.
- Text & Logo — original pixels are preserved, never re-drawn by the model.
Change — creative freedom
One tap per intent. Each chip compiles into a structured instruction with the right negative constraints.
- Style — anime, watercolor, film, 3D, oil paint and 40+ more.
- Background — a new scene behind an untouched subject.
- Outfit — swap clothing while the person stays the person.
- Lighting — golden hour, studio, neon night, overcast.
Subtle
Light touch: tone, light, small edits. Routed to precise editing models.
Balanced
The default. Obvious change with stable identity and layout.
Creative
Big reimagining. Structure loosens — fine details may drift, on purpose.
Three steps
From photo to finished image in under a minute
Upload & auto-detect
Drop any JPG, PNG or WebP. We recognize portraits, products, sketches and interiors, and pre-lock what usually matters for that kind of image.
Lock, describe, set strength
Toggle what to keep, tap what to change, pick Subtle, Balanced or Creative. No denoising values, no seed numbers, no model menus.
Compare, download, iterate
Slide before/after, download free with no watermark, then keep editing the result with plain language — no re-upload needed.
One-tap starts
Prompt templates that fill the tool for you
Tap any template — it configures keep, change and strength, then scrolls you back to the studio.
Complete guide
Turn a sketch into an image while keeping the drawing in control
Keepframe is a free sketch to image AI for turning line art, concept drawings and rough design sketches into polished images. Instead of asking a text-to-image model to guess your geometry, upload the drawing as the source, lock its composition, and describe the finish you want. Your first render is free with no sign up and no watermark.
What you can make
Architecture and interiors
Turn a room elevation or perspective sketch into a client-ready visual. Keep walls, openings and major furniture placement fixed while testing a warm modern, japandi or industrial direction.
Characters and storyboards
Color a character sheet, fashion silhouette or storyboard frame while preserving pose and framing. Use Creative strength for a bold finish and Balanced when line fidelity matters more.
How to get a controlled result
A three-step workflow for Sketch to Image AI
Upload clean line art
Use a high-contrast JPG, PNG or WebP. Crop out unrelated notes when possible; a clear silhouette gives the model a stronger structural reference.
Lock composition and subject
Keep Composition on for the same framing and enable Subject when the outline represents a specific object or character. Choose Sketch as the change type.
Describe the final render
Name material, style, lighting and background in one instruction, then compare edges against the original. Lower strength if the geometry begins to drift.
Prompt examples
Copy one as a starting point, then change only the details that matter to your image.
- Render this line drawing as a photorealistic product photo, brushed aluminum, soft studio light, neutral background.
- Color this character line art as a polished 3D animation still; keep the pose, silhouette and facial expression.
- Turn this room sketch into a warm japandi interior render; keep every wall, window and camera angle unchanged.
- Render this fashion sketch in realistic linen and leather with editorial lighting; preserve garment proportions.
Common problems and fixes
Use these checks before increasing change strength or adding more instructions.
Faint lines. Increase contrast before uploading so important edges are not mistaken for shading.
Unwanted geometry changes. Use Balanced or Subtle strength and keep Composition locked.
Over-detailed prompts. Start with one material, one lighting direction and one background; iterate after the first result.
Small labels. Enable Text & Logo lock when the sketch contains lettering that must remain exact.
Continue the workflow
Related tools for the next edit
Genjutsu-Style AI Video
Bring a character design to life: keep a clip’s motion and apply your design to it.
AI Product Image Generator
Take the finished concept into product scenes and ad variants.
Interior Design AI
Restyle a real room photo while keeping its layout.
Image Variation Generator
Explore alternate finishes from the same composition.
Private by default
Your images and results are never public. No gallery, no indexable links.
Auto-delete in 24h
Anonymous uploads and results are wiped within 24 hours, automatically.
Never trained on
We don't use your uploads to train models. Not opt-out — it just doesn't happen.
Delete instantly
One click removes the source and every result. Download links die with it.
Simple pricing
A free first result. Credits when you need more.
5 credits per successful standard image. Two more takes cost up to 10 credits. Failed images are refunded.
Compare all credit plans and usage costs
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Subscriptions renew monthly and add credits after each successful payment. Packs are one-time purchases, available with or without a subscription. Unused credits carry over and remain after cancellation. No automatic pack purchases.
Honest limits
What AI still gets wrong — and what we do about it
No “100% accurate” promises. Here's the truth, and the workaround.
Faces can drift at Creative strength. If it stops looking like you, drop to Balanced or Subtle — Face lock works hardest there.
Hands and fingers remain the hardest thing in AI imaging. Keep them out of the change region when you can.
Tiny text and fine logos may blur if they're not locked. Turn on Text & Logo lock — we composite the original pixels back.
Complex textures like lace, fur or micro-patterns can simplify. Subtle strength preserves them best.
Big scene swaps can nudge edges of the composition. Lock Composition and expect minor boundary shifts, not layout changes.
Failed generations happen. Timeouts and moderation blocks are labeled clearly and never consume your free quota.
FAQ
Questions, answered straight
Yes. Your first sketch render is free with no sign up and no watermark. Failed generations do not consume the free result.
Line art, pencil drawings, product concepts, room sketches, character sheets and fashion drawings work best when the main outline is easy to read.
Composition and Subject locks tell the model to preserve the silhouette and proportions. Very creative settings can still drift, so use Balanced or Subtle when exact geometry matters.
Yes. Describe photorealistic, 3D, watercolor, anime, marker rendering or another finish in the instruction.
Yes if you own or have permission to use the source sketch and any referenced material. You remain responsible for the input and output rights.
Task-specific tools
Start from your exact job
Each tool pre-configures the right locks and presets for the task.
Sketch to Image AI
Line art to realistic or stylized renders. Outline & composition locked.
Change Background, Keep Person
New scene behind an untouched you. Face, body & pose locked.
Product Image AI
Studio shots and ad variants. Product, logo & packaging locked.
Photo to Anime AI
Anime and manga styles with your face and pose intact.
Interior Design AI
Restyle a room without moving a wall. Layout, doors & windows locked.
Image Variation Generator
Four takes on the same idea. Subject & composition preserved.
AI Headshot Generator
Casual selfie to LinkedIn-ready headshot. Your face, locked.
Virtual Staging AI
Stage empty listings in seconds. Walls & windows never move.
Image Variation Prompts
Copy controlled prompts for lighting, palette, season, background and style.
Photo Variation Examples
Recreate practical before-and-after directions without losing the source.
AI Product Photography
Ecommerce and campaign photo workflows built from one real product.
Product Background Generator
Replace only the set while product, logo and packaging stay consistent.