Sublimation businesses
A client sends an image on WhatsApp. Before you print a single mug or shirt, check if the resolution meets the standard for that specific substrate. Stop guessing. Stop wasting blanks.
Upload any image, set your print size and medium — get an instant quality score that actually reflects what your print will look like. Not just a DPI number. A real answer.
Upload an image and enter your print size to see the quality score.
Not sure what size you need?
No guessing. No wasted prints. Just upload and follow the score.
Drag and drop any JPEG, PNG, or WebP onto the tool. Your file is read locally in your browser — it is never sent to any server, ever. The tool automatically reads embedded DPI if your file has it.
Enter the width and height in inches, or pick from 50+ smart presets covering photos, paper sizes, canvas, sublimation products, signage, and social media to print conversions.
Select what you are printing on — coated paper, canvas, sublimation mug, vinyl banner. Then set how far away viewers will stand. These two inputs change your score significantly and correctly.
The PPQS score (0–100) tells you exactly what to do: print now, upscale with a specific tool, or reduce print size. No ambiguous numbers — just a clear, actionable decision.
Most print calculators divide pixels by print size and call it done. That formula dates from the 1990s and ignores how human vision actually works.
PPQS factors in three things that a basic calculator misses. First, viewing distance — a billboard at 40 feet needs a fraction of the DPI required by a business card held in your hand. Second, print medium absorption — canvas texture and fabric weave absorb ink differently than glazed ceramic or coated paper, changing perceived sharpness. Third, human eye angular resolution — the calculation is grounded in ISO 8596 visual acuity science, not arbitrary thresholds.
The result is a score that reflects what the print will look like to a real viewer, not just a raw number.
Whether you print once a year or run a daily production floor, this tool answers the question every print job starts with.
A client sends an image on WhatsApp. Before you print a single mug or shirt, check if the resolution meets the standard for that specific substrate. Stop guessing. Stop wasting blanks.
You shot a 12MP portrait. The client wants a 30×40 canvas. Canvas absorbs detail and is viewed from across a room — your image likely qualifies even though a basic DPI calculator would flag it as too low. Get the real answer.
Before you start a project, use the reverse calculator to find the exact pixel canvas you need. After you finish, verify quality before sending the file to the print house. Catch errors before they cost money.
Midjourney default output is 1024×1024 pixels. That is 3.4 inches at 300 DPI — not printable at poster size. The tool shows you exactly how much AI upscaling is needed before listing on Etsy, Redbubble, or Printify.
Practical, accurate guides written for 2026 print workflows — not recycled 2015 blog posts.
Why changing the DPI number in Photoshop does nothing. What actually determines print sharpness. Viewing distance charts. AI upscaling explained. The resource you send clients when they ask about resolution.
Read the DPI GuideMug vs t-shirt vs ceramic tile vs metal panel — every material has a different standard. Includes ICC profile guidance, RGB vs CMYK, bleed areas, and common mistakes that waste blanks.
Sublimation TipsEvery standard print size in one place. Photos, paper formats, canvas sizes, social media to print conversions, AI image output sizes. The reference tab you keep open during every project.
View the ChartThis is an experimental, open-source tool. We believe you should know exactly what the score means, what it cannot tell you, and how the algorithm works. No black box, no fake precision.
The score combines three inputs: your image's effective pixel density at the chosen print size, the minimum DPI a human eye can perceive at the expected viewing distance (ISO 8596 visual acuity constant ÷ distance in inches), and a medium absorption factor for how different surfaces hold or spread ink. The score shows how far you are above or below the perceptual threshold for that specific combination — not a generic good/bad judgment.
This is version 2.1 of the algorithm. We update it as we gather real-world feedback, test against more substrates, and refine the medium absorption values. Each update is versioned and documented in the GitHub changelog. If a score does not match your real-world result, open an issue — that feedback directly improves the algorithm for everyone.
PPQS is a perceptual quality estimate — not a print guarantee. It cannot account for your specific printer's calibration, ink brand, paper batch variation, image content (a soft-focus portrait needs less DPI than sharp architectural detail), JPEG compression artifacts, or color accuracy. A score of 90 means the resolution is strong for that medium — not that the print will look perfect if other variables are off.
Straight answers to the questions that come up most.
It depends on what you are printing and where it will be viewed — there is no single universal number.
For photos, brochures, and anything viewed at arm's length: 300 DPI is the professional standard. For canvas wall art viewed from across a room: 150 DPI is sufficient — the canvas texture naturally masks any difference, and this is the genuine industry standard. For vinyl banners viewed from 5–15 feet: 72–100 DPI is correct. For billboards viewed from 30+ feet: 15–50 DPI is what commercial print houses actually use.
The PPQS calculator factors in your specific medium and viewing distance, so you always get the right answer for your actual situation.
No. This is the most common print myth.
Changing the DPI number in a file's metadata — through Photoshop's Image Size with "Resample" unchecked, or any other tool — does not add any real pixels. A 1000×1000 image at 72 DPI and the same 1000×1000 image at 300 DPI contain identical pixel data. Changing the number just changes how large the print dimensions appear in software. The actual print quality is identical.
Real quality improvement comes from having more actual pixels. If your image is too low resolution, you need to either use AI upscaling (Topaz Photo AI, Adobe Super Resolution) to add real pixels, or reduce your print size so the existing pixels are not stretched too far.
The standard varies by material because different surfaces absorb ink differently.
Polyester fabric (t-shirts, tote bags, flags): 150 DPI. The fabric weave absorbs ink spread, making detail above 150 DPI invisible. Ceramic (mugs, tiles): 200 DPI for photo-quality results. Metal aluminum panels: 300 DPI — the hard surface holds fine detail well. Phone cases: 300 DPI, as they are viewed close-up and often contain fine text or logos.
Always use RGB color mode for sublimation — never CMYK. Sublimation dyes are applied using heat and gas, and the color science is RGB-based. Converting to CMYK before printing causes color shifts.
Your image never leaves your device.
All processing happens in your browser using JavaScript. The pixel dimensions are read by your browser's built-in image APIs. No image data, no file content, no metadata is sent to any server. You can disconnect from the internet after the page loads and the tool will continue to work.
This is not just a policy statement — it is how the tool is technically built. There is no backend server to receive data. The source code is open on GitHub if you want to verify this.
PPQS stands for Perceptual Print Quality Score. Basic DPI calculators use one formula from the 1990s: pixels ÷ print size. That formula works, but it tells you nothing about whether the result is actually good enough for your use case.
PPQS adds three factors. Viewing distance: at 40 feet, a billboard looks sharp at 30 DPI. The same image on a business card at 30 DPI is unreadable. The formula models this using the human eye angular resolution constant (3438, derived from ISO 8596). Medium absorption: each print surface has a material absorption factor — canvas absorbs ink spread differently than coated paper or ceramic glaze. Quality threshold: the score is calibrated per medium, so 150 DPI on canvas correctly scores as Excellent, not Marginal.
Yes, within limits. Modern AI upscaling tools like Topaz Photo AI, Adobe Lightroom Super Resolution, and Magnific AI genuinely add perceptual detail through machine learning — they are not basic interpolation. A 2× AI upscale produces significantly better results than doubling size in Photoshop.
The practical limit is around 4×. Beyond that, the AI is synthesizing detail that was never there, and artifacts become visible at close range. The tool models this: selecting an AI upscaling preset adjusts the quality gain using published benchmark data, not just multiplying the resolution number. It will also warn you when even 4× AI upscaling is not sufficient for your target print, so you know to find a higher-resolution source.