Purlgrid editorial team

Photo to Knitting Chart: Compare Your Options

The useful comparison is what happens after a photo becomes stitches. Does the subject still read clearly? Can you fix lost details? Will you have usable instructions and a saved copy? Purlgrid is not affiliated with Stitch Fiddle or Stitchboard.

The short answer

To make a knitting chart from a photo, use automatic conversion for a first draft, draw by hand for precise control, or combine both. Purlgrid’s web editor supports photo conversion and manual editing; Stitch Fiddle and Stitchboard offer other conversion workflows. Choose by detail, stitch proportions, editing, storage, and the output you need.

Choose automatic conversion, manual drawing, or both

Automatic conversion reduces an image to a grid and a limited palette. It gives you a starting point when you want to retain several areas of shading. Inspect the result: a converter cannot decide which tiny feature matters most to your particular picture.

Manual drawing lets you choose every cell, which suits a silhouette or a deliberately simplified motif. It takes more decisions upfront but gives you control over outlines and gaps. For that workflow, follow How to Make a Knitting Chart from a Picture in our guides.

A combined workflow starts with conversion, then redraws the defining features. Try it with your own photo of a leaf or a simple object against a plain background. Decide which outline must survive before choosing a tool.

Purlgrid: convert locally, then edit the yarn grid

On Knitting Chart Maker, select Open the chart maker to enter the colourwork editor. Open Add, then Photo. Set Colour and width before selecting Choose photo…; choosing the file starts conversion. Save an existing design first, because importing a photo replaces the current working grid.

Photo processing happens on your device. Purlgrid reduces the palette, merges similar shades, cleans isolated cells, and matches the result to yarn textures from its library. These are Purlgrid’s own textures, not matches to purchasable yarn products. Inspect small features afterward: cleanup can remove a detail you wanted.

The photo controls accept 2–10 colours and widths of 8–400 stitches. The returned palette can contain fewer colours after merging and cleanup. The editor’s grid limit is 400 × 400; a tall photo may receive a narrower chart than requested to stay within the row limit. Review the conversion message.

Stitch Fiddle: editable imports and cloud storage

Stitch Fiddle’s Import picture help describes converting a photo into a knitting colourwork chart, choosing a colour count, and editing individual cells afterward. It also provides adjustable gauge proportions. Its pricing page confirms browser use on computers, tablets, and phones, with saved charts synchronized between devices.

Those features suit someone who wants adjustable cell proportions or access across devices. Basic features are free; Premium is a subscription period paid through a one-time payment without automatic renewal. Check the current plan for your required download format and editing tools. The import help warns that some advanced settings are unavailable on small phone screens.

Stitchboard: a conversion form with output choices

Stitchboard’s Free Pattern Wizard is a web form that accepts an image, offers Knitting as a category, and lets you choose the stitch width and automatic or manual colour selection. Its output options include an on-screen pattern and PDF with colours, symbols, or both.

This suits someone who wants to configure conversion and document output together. The official feature comparison distinguishes guest access, free membership, and Premier subscriptions. PDF output requires free membership. Before choosing it for a large chart, check the current image and stitch-width limits for your access level.

Compare the same picture at a useful stitch count

Use the same crop in each converter and compare the resulting dimensions, palette, and recognizable features. Do not assume that identical size fields mean identical grids: tools can interpret size and stitch proportions differently. A detailed preview is useful only if you can work its colour changes.

For a calculated Purlgrid example, a square 800 × 800-pixel photo requested at 40 stitches wide produces 50 rows, or 2,000 stitch positions. Its conversion calculation uses a fixed row-height-to-stitch-width ratio of 0.8. This example calculates dimensions from the code; it does not claim a tested visual result for a particular photograph.

Purlgrid’s preview keeps fixed stitch proportions; entering your gauge changes calculated dimensions, not the preview’s shape. Stitch Fiddle offers adjustable gauge proportions. If the subject’s proportions are critical, compare that control before committing. For physical sizing, see Why is my knitting or crochet the wrong size? in our guides.

Choose by the work you still need to do

Choose Purlgrid when you want local photo processing, a knitted texture preview, and direct cell editing. Choose a workflow with adjustable proportions or synchronized storage when those needs take priority. If conversion loses the essential outline, simplify it manually instead of adding colours indefinitely.

Purlgrid’s Knitting Chart Checker accepts painted grids or text colour data, not photo uploads. It supports up to 80 × 80 cells and four colours. Its knitting choices are Fair Isle and Intarsia; select the matching Technique and Worked settings. A photo-derived colour chart still needs construction instructions; it does not supply garment shaping.

Keep the editable chart in My designs and retain a share link for another device. My projects is a separate workspace for supported tool projects and notes, with Export backup and Import backup; it has no automatic account sync. For working downloads, Purlgrid offers a knitted PNG, Chart table (CSV), and Written instructions (TXT). Our Printable Knitting Charts: PNG or PDF? guide explains the output choices.

Open the chart maker ↗

Before you continue

  1. Choose a photo you own and identify the features that must remain recognizable.
  2. Compare the same crop and inspect each tool’s actual grid dimensions.
  3. Check stitch proportions, palette changes, and lost details before saving.
  4. Confirm the required export format and access level on the provider’s current site.
  5. Save an editable version and a separate copy you can keep outside the browser.

More questions, answered

Can Purlgrid turn a photo into a knitting chart?

Yes. In the web editor, use Add → Photo, set the conversion controls, then choose the image. You can paint over the resulting cells.

Is automatic conversion better than drawing by hand?

It depends on what you need to preserve. Try conversion for shading; draw manually for a simplified outline. Combine them when the draft is useful but important details need repair.

Why did my selected colour count decrease?

Purlgrid merges similar shades and cleans isolated cells during conversion. The requested count is not a promise that the finished chart will use that many yarns.

Can I upload the photo to Chart Checker instead?

No. Convert it in the colourwork editor first. Chart Checker works with painted cells or supported text colour data; it does not interpret an image file.

Will converting a sweater photo recreate its pattern?

Purlgrid converts the visible picture into colour placements. It does not infer the sweater’s stitch structure, shaping, measurements, or assembly instructions. You still need a construction plan.

Sources and further reading

All practical guides · Beginner guides in seven languages