diff --git a/.github/workflows/pkgdown.yaml b/.github/workflows/pkgdown.yaml
index eb86cd0..ba2f6a2 100644
--- a/.github/workflows/pkgdown.yaml
+++ b/.github/workflows/pkgdown.yaml
@@ -57,10 +57,10 @@ jobs:
       - name: Prepare Mermaid assets for docs
         run: |
           for file in inst/mermaid/*.mmd; do
-            mmdc -i "$file" -o "${file/.mmd/.pdf}"
+            mmdc -i "$file" -o "${file/.mmd/.svg}"
           done
           mkdir -p docs/mermaid
-          mv inst/mermaid/*.pdf docs/mermaid
+          mv inst/mermaid/*.svg docs/mermaid
         working-directory: ${{ env.PROJECT_DIR }}
         shell: bash
 
diff --git a/README.Rmd b/README.Rmd
index 9d792b2..3b2515b 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -254,116 +254,10 @@ The PTAXSIM backend database contains cleaned data from the Cook County Clerk, T
 ### Database diagram
 
 > :warning:
-> [Click here](https://ccao-data.github.io/ptaxsim/mermaid/er-diagram-big.pdf)
+> [Click here](https://ccao-data.github.io/ptaxsim/mermaid/er-diagram-big.svg)
 > for a more detailed version of the diagram below.
 
-```mermaid
-erDiagram
-
-  agency {
-    int     year              PK
-    varchar agency_num        PK
-    boolean home_rule_ind
-    bigint  cty_cook_eav
-    double  total_ext
-  }
-
-  agency_info {
-    varchar agency_num         PK
-    varchar agency_name
-    varchar major_type
-  }
-
-  agency_fund {
-    int     year               PK
-    varchar agency_num         PK
-    varchar fund_num           PK
-    bigint  final_levy
-    double  final_rate
-  }
-
-  agency_fund_info {
-    varchar fund_num           PK
-    varchar fund_name
-    boolean capped_ind
-  }
-
-  cpi {
-    int     year
-    double  cpi
-    double  ptell_cook
-    int     levy_year          PK
-  }
-
-  eq_factor {
-    int     year               PK
-    double  eq_factor_tentative
-    double  eq_factor_final
-  }
-
-  metadata {
-    varchar db_version
-    varchar requires_pkg_version
-    int     data_year_min
-    int     data_year_max
-  }
-
-  pin {
-    int     year               PK
-    varchar pin                PK
-    varchar class
-  }
-
-  pin_geometry {
-    int     year
-    varchar pin10
-    text    geometry
-  }
-
-  tax_code {
-    int     year               PK
-    varchar agency_num         PK
-    double  agency_rate
-    varchar tax_code_num       PK
-    double  tax_code_rate
-  }
-
-  tif {
-    int     year               PK
-    varchar agency_num         PK
-    double  prev_year_revenue
-    double  curr_year_revenue
-    int     first_year
-    boolean cancelled_this_year
-  }
-
-  tif_crosswalk {
-    int     year
-    varchar agency_num_dist
-    varchar agency_num_final
-  }
-
-  tif_distribution {
-    int     year               PK
-    varchar agency_num         PK
-    varchar tax_code_num       PK
-    double  tax_code_distribution_pct
-  }
-
-  eq_factor ||--|{ pin : "applies to"
-  pin ||--|{ tax_code : "within"
-  cpi ||--|{ agency : "applies to"
-  tax_code }|--|| agency : "has"
-  tax_code ||--o| tif_distribution : "may have"
-  agency ||--|{ agency_fund : "contains"
-  agency_info ||--|{ agency : "describes"
-  agency_fund_info ||--|{ agency_fund : "describes"
-  tif ||--|| tif_crosswalk : "in"
-  tif_distribution }|--|| tif_crosswalk : "in"
-  agency_info ||--o{ tif: "describes"
-  tax_code }|--o| tif : "may have"
-  pin_geometry ||--o| pin : "has"
-```
+![](https://ccao-data.github.io/ptaxsim/mermaid/er-diagram-small.svg)
 
 ## Notes and caveats
 
diff --git a/README.md b/README.md
index 33fccf5..72603c2 100644
--- a/README.md
+++ b/README.md
@@ -567,116 +567,10 @@ data was available in mid-2020.
 ### Database diagram
 
 > :warning: [Click
-> here](https://ccao-data.github.io/ptaxsim/mermaid/er-diagram-big.pdf)
+> here](https://ccao-data.github.io/ptaxsim/mermaid/er-diagram-big.svg)
 > for a more detailed version of the diagram below.
 
-``` mermaid
-erDiagram
-
-  agency {
-    int     year              PK
-    varchar agency_num        PK
-    boolean home_rule_ind
-    bigint  cty_cook_eav
-    double  total_ext
-  }
-
-  agency_info {
-    varchar agency_num         PK
-    varchar agency_name
-    varchar major_type
-  }
-
-  agency_fund {
-    int     year               PK
-    varchar agency_num         PK
-    varchar fund_num           PK
-    bigint  final_levy
-    double  final_rate
-  }
-
-  agency_fund_info {
-    varchar fund_num           PK
-    varchar fund_name
-    boolean capped_ind
-  }
-
-  cpi {
-    int     year
-    double  cpi
-    double  ptell_cook
-    int     levy_year          PK
-  }
-
-  eq_factor {
-    int     year               PK
-    double  eq_factor_tentative
-    double  eq_factor_final
-  }
-
-  metadata {
-    varchar db_version
-    varchar requires_pkg_version
-    int     data_year_min
-    int     data_year_max
-  }
-
-  pin {
-    int     year               PK
-    varchar pin                PK
-    varchar class
-  }
-
-  pin_geometry {
-    int     year
-    varchar pin10
-    text    geometry
-  }
-
-  tax_code {
-    int     year               PK
-    varchar agency_num         PK
-    double  agency_rate
-    varchar tax_code_num       PK
-    double  tax_code_rate
-  }
-
-  tif {
-    int     year               PK
-    varchar agency_num         PK
-    double  prev_year_revenue
-    double  curr_year_revenue
-    int     first_year
-    boolean cancelled_this_year
-  }
-
-  tif_crosswalk {
-    int     year
-    varchar agency_num_dist
-    varchar agency_num_final
-  }
-
-  tif_distribution {
-    int     year               PK
-    varchar agency_num         PK
-    varchar tax_code_num       PK
-    double  tax_code_distribution_pct
-  }
-
-  eq_factor ||--|{ pin : "applies to"
-  pin ||--|{ tax_code : "within"
-  cpi ||--|{ agency : "applies to"
-  tax_code }|--|| agency : "has"
-  tax_code ||--o| tif_distribution : "may have"
-  agency ||--|{ agency_fund : "contains"
-  agency_info ||--|{ agency : "describes"
-  agency_fund_info ||--|{ agency_fund : "describes"
-  tif ||--|| tif_crosswalk : "in"
-  tif_distribution }|--|| tif_crosswalk : "in"
-  agency_info ||--o{ tif: "describes"
-  tax_code }|--o| tif : "may have"
-  pin_geometry ||--o| pin : "has"
-```
+![](https://ccao-data.github.io/ptaxsim/mermaid/er-diagram-small.svg)
 
 ## Notes and caveats