Your creative workspace

CHOOSE YOUR OUTPUT

Six tools. A layout for each project.
Your source image can follow you between tools in this tab.

THE MESH WORKSHOP

Filet Crochet Pattern Maker

Turn an image into open and filled filet crochet blocks,
edit the grid, and download a numbered chart.

BLOOM / CELL PREVIEW
32 × 32 pixels · 16 colors1 CELL = 1 MESH BLOCK
Filled block Open meshRead the chart ↓

Edit a block

Click or tap a block to toggle it. For precise edits, use the coordinates above. On the focused chart, arrow keys move; Enter or Space toggles.

03

A mesh chart ready to follow.

32 columns × 32 rows · one color per cell

Preparing your example…

Need a colored stitch chart instead? →
Open / filled blocks Editable grid Local processing

Physical validation by an experienced crocheter is still pending. Work a small test piece before using the full chart.

A SHAPE DEFINED BY OPEN SPACE

Convert an Image to Open and Filled Blocks

Two block states.
A clear silhouette to work from.

Original fern illustration with dark, medium, and pale leavesSOURCE ARTWORK
Actual 24 by 24 filet chart of the fern at threshold 150OPEN / FILLED CHART
Fern · 24 × 24 blocks · threshold 150
Original vector artwork and actual tool output; not a photograph of finished lace.

A filet crochet pattern generator with two states

Choose a clear silhouette or high-contrast image. The tool samples it into a block grid, converts brightness to an open-or-filled decision, and gives you an editable chart. It does not assign yarn colors or treat every square as a single stitch.

Move the threshold up to fill more of the lighter parts of the source. Move it down to keep only darker areas. Transparent pixels are placed on white before conversion. A higher setting can join details together, so inspect the spaces as well as the motif.

Download the Fern filet chart

This sample download does not replace the image or edits in your workspace.

Fern at threshold 96, retaining only darker parts
96 · darker detailsFewer filled blocks
Fern at threshold 150, with more leaf detail included
150 · middle settingThe downloadable example
Fern at threshold 215, including the pale lower leaf
215 · lighter detailsMore filled blocks

REFINE THE BLOCKS THAT MAKE THE MOTIF

Adjust the Filet Grid

Choose a useful size.
Then edit the details deliberately.

01 / BLOCK DIMENSIONS

Set columns and block rows

Choose 8–128 blocks per side. The proportion lock follows the source image, with whole-block rounding and size limits. Unlock it to set a different rectangle, then use Fit entire image or Center crop. These are chart proportions; the actual mesh depends on your thread, hook, and tension.

02 / INDIVIDUAL BLOCKS

Clean a contour or restore a detail

Click a block to switch its state, or enter its column and row to Fill or Open it precisely. Row numbers start at the bottom. Keyboard users can focus the chart, move with arrow keys, and press Enter or Space. Undo and Redo keep up to 30 editing actions.

03 / WHOLE-GRID CHANGES

Invert the motif or review its edge

Invert current grid swaps every open and filled block, including your edits. Open outer edge clears only the outside row and columns. It does not add stitches or define a crochet border. Both operations can be undone. Changing the source, threshold, size, or image fit regenerates the chart and clears edit history.

Count blocks as blocks

A 24 × 24 grid has 576 mesh positions. That is not a 576-stitch pattern. This version deliberately provides block counts without foundation-chain, stitch-total, or yarn calculations.

BEFORE YOU WORK THE MESH

Filet Pattern Questions

Practical answers about
blocks, edits, and printing.

Can I change individual blocks in the chart?

Yes. Click or tap a block in Block chart view to toggle it. For precise selection, enter a column and row, then choose Fill or Open. The row coordinate is counted from the bottom. Arrow keys and Enter or Space provide the same control on the focused chart.

What is the difference between blocks and stitches?

A block is one unit of the mesh diagram, not an individual crochet stitch. The supported 4-dc method shares boundary posts between adjacent blocks. The totals shown here count open and filled blocks only; they cannot be used directly as stitch or starting-chain totals.

Can I make a filet crochet chart from a photo?

Yes. Use PNG, JPG, or WebP up to 20 MB and 24 megapixels. Crop around a distinct subject, then try the threshold slider. A busy photograph can turn into scattered blocks, so a silhouette or simple illustration usually requires fewer manual corrections.

How do I reverse the open and filled areas?

Choose Invert current grid. It flips every block in the current chart, including manual edits. Choosing it twice returns the same block arrangement. Undo can also restore the previous grid.

Can I print a large filet chart across several pages?

Yes. The PDF begins with a method and key page, then uses chart sections of up to 30 × 30 blocks. Global row and column numbers stay consistent across pages. Follow the row arrows across sections rather than finishing one section as a separate piece.

Does this calculate the starting chain or written instructions?

No. This version exports a block chart only. It does not calculate foundation chains, turning chains, stitch totals, yarn amounts, shaped edges, or written row instructions. Use an appropriate method reference and verify your setup with a small swatch.

Why did my block edits disappear after adjusting the threshold?

Threshold, size, image-fit, and source changes regenerate the conversion. They start a new editing history. Set those choices before refining individual blocks. Changing the reading direction or print style preserves the edited grid.

Is this the same as a tapestry crochet graph?

No. Filet uses open and filled mesh blocks. For a colored single-crochet chart with stitch gauge and a color key, use the crochet graph maker. This page does not convert mesh blocks into individual tapestry stitches.

Have the example patterns been physically tested?

Not yet. Digital checks compare conversion, edits, directions, and PDF blocks. They do not prove the result of a specific thread, hook, or tension.

Is my image uploaded or stored?

Conversion and downloads happen locally in your browser. No image or filename is sent to our server. Switching tools in this tab temporarily stores the source and settings in the browser; a transfer is deleted when read. Unused transfers expire after one hour and are cleaned up at the next transfer. Download your work before closing the tab.